Symantec Internet Security Threat Report 2018 - PhishingBox
ISTRInternet SecurityThreat ReportVolume23
01IntroductionPage 2ISTR April 2017THE DOCUMENT IS PROVIDED “AS IS” AND ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIEDWARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO THE EXTENT THATSUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID.SYMANTEC CORPORATION SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING,PERFORMANCE, OR USE OF THIS DOCUMENT. THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE.INFORMATION OBTAINED FROM THIRD PARTY SOURCES IS BELIEVED TO BE RELIABLE, BUT IS IN NO WAY GUARANTEED.SECURITY PRODUCTS, TECHNICAL SERVICES, AND ANY OTHER TECHNICAL DATA REFERENCED IN THIS DOCUMENT (“CONTROLLED ITEMS”) ARESUBJECT TO U.S. EXPORT CONTROL AND SANCTIONS LAWS, REGULATIONS AND REQUIREMENTS, AND MAY BE SUBJECT TO EXPORT OR IMPORTREGULATIONS IN OTHER COUNTRIES.YOU AGREE TO COMPLY STRICTLY WITH THESE LAWS, REGULATIONS AND REQUIREMENTS, AND ACKNOWLEDGE THAT YOU HAVE THERESPONSIBILITY TO OBTAIN ANY LICENSES, PERMITS OR OTHER APPROVALS THAT MAY BE REQUIRED IN ORDER FOR YOU TO EXPORT, RE-EXPORT,TRANSFER IN COUNTRY OR IMPORT SUCH CONTROLLED ITEMS.Back to Table of Contents
01Introduction03Facts and FiguresExecutive SummaryMalwareBig NumbersWeb ThreatsMethodologyEmailVulnerabilitiesTargeted Attacks02Year in ReviewMobile ThreatsThe Cyber Crime Threat LandscapeInternet of ThingsTargeted Attacks by NumbersFraud and the UndergroundEconomyRansomware:More than Just Cyber CrimeInfecting the Software Supply ChainThe Mobile Threat Landscape04TABLE OFCONTENTSPredictions
IntroSection01
01IntroductionPage 5ISTR March 2018Executive SummaryFrom the sudden spread of WannaCry andPetya/NotPetya, to the swift growth incoinminers, 2017 provided us with anotherreminder that digital security threats can comefrom new and unexpected sources. With eachpassing year, not only has the sheer volume ofthreats increased, but the threat landscapehas become more diverse, with attackersworking harder to discover new avenues ofattack and cover their tracks while doing so.Coin-mining attacks explodeCyber criminals who have been firmly focused onransomware for revenue generation are now starting toexplore other opportunities. During the past year, theastronomical rise in cryptocurrency values inspired manycyber criminals to shift to coin mining as an alternativerevenue source. This coin mining gold rush resulted in an8,500 percent increase in detections of coinminers onendpoint computers in 2017.With a low barrier of entry—only requiring a couple linesof code to operate—cyber criminals are using coinminersto steal computer processing power and cloud CPU usagefrom consumers and enterprises to mine cryptocurrency.While the immediate impact of coin mining is typicallyperformance related—slowing down devices, overheatingbatteries and in some cases, rendering devicesunusable—there are broader implications, particularly fororganizations. Corporate networks are at risk of shutdownfrom coinminers aggressively propagated across theirenvironment. There may also be financial implications fororganizations who find themselves billed for cloud CPUusage by coinminers.As malicious coin mining evolves, IoT devices will continueto be ripe targets for exploitation. Symantec alreadyfound a 600 percent increase in overall IoT attacks in2017, which means that cyber criminals could exploit theconnected nature of these devices to mine en masse.Spike in softwaresupply chain attacksDespite the EternalBlue exploit wreaking havoc in 2017,the reality is that vulnerabilities are becoming increasinglydifficult for attackers to identify and exploit. In responseto this, Symantec is now seeing an increase in attackersinjecting malware implants into the supply chain toinfiltrate unsuspecting organizations, with a 200 percentincrease in these attacks—one every month of 2017 ascompared to four attacks annually in years prior.Hijacking software updates provides attackers with anentry point for compromising well-protected targets, orto target a specific region or sector. The Petya/NotPetya(Ransom.Petya) outbreak was the most notable example:after using Ukrainian accounting software as the pointof entry, Petya/NotPetya used a variety of methods tospread across corporate networks to deploy the attackers’malicious payload.Ransomware businessexperiences market correctionWhen viewed as a business, it’s clear that ransomwareprofitability in 2016 led to a crowded market withoverpriced ransom demands. In 2017, the ransomware“market” made a correction with fewer ransomwarefamilies and lower ransom demands—signaling thatransomware has become a commodity. Many cybercriminals may have shifted their focus to coin mining asan alternative to cash in while cryptocurrency values arehigh. Some online banking threats have also experienceda renaissance as established ransomware groups haveattempted to diversify.Last year, the average ransom demand dropped to 522,less than half the average of the year prior. And while thenumber of ransomware variants increased by 46 percent,indicating the established criminal groups are still quiteproductive, the number of ransomware families dropped,suggesting they are innovating less and may have shiftedtheir focus to new, higher value targets.Back to Table of Contents
01IntroductionPage 6ISTR March 2018Drop in zero days can’t haltthe rise in targeted attacksSymantec has found that overall targeted attack activity isup by 10 percent in 2017, motivated primarily (90 percent)by intelligence gathering. However, a not-so-insignificant10 percent of attack groups engage in some form ofdisruptive activity.The “Living off the Land” trend continues with attackgroups opting for tried-and-trusted means to infiltratetarget organizations. Spear phishing is the number oneinfection vector employed by 71 percent of organizedgroups in 2017. The use of zero days continues to fallout of favor. In fact, only 27 percent of the 140 targetedattack groups that Symantec tracks have been known touse zero-day vulnerabilities at any point in the past.Mobile malware continues to surgeThreats in the mobile space continue to grow yearover-year. The number of new mobile malware variantsincreased by 54 percent in 2017, as compared to 2016.And last year, there were an average of 24,000 maliciousmobile applications blocked each day.While threats are on the increase, the problem isexacerbated by the continued use of older operatingsystems. In particular, on Android , only 20 percent ofdevices are running the newest major version and only2.3 percent are on the latest minor release.Mobile users also face privacy risks from grayware, appsthat aren’t completely malicious but can be troublesome.Symantec found that 63 percent of grayware apps leakthe device’s phone number. With grayware increasing by20 percent in 2017, this isn’t a problem that’s going away.Back to Table of Contents
Big NumbersWeb ThreatsMore than1BillionWeb requests analyzed each dayUp 5% from 20161 in 13Web requests lead to malwareUp 3% from 2016Malware92%Increase in newdownloadervariants80%Increasein newmalwareon Macs8,500%Increase incoinminerdetections
EmailPercentagespam rate201553%Ransomware5.4BWannaCryattacks blocked46%Increase in newransomwarevariants2016201753%55%
IoT2017600%Increasein attacksagainst IoTdevices2016Attack OriginRussian Federation6%Japan4%United States11%Brazil7%India5% China21%
MobileNumber ofnew variantsIncrease in mobilemalware variants201617K201727K24,00054%Average number of maliciousmobile apps blocked each dayApp categories thathave the most maliciousmobile apps are:27% Lifestyle20% Music & AudioLeaky apps – whatsensitive information dothey most often leak?63% Phone Number37% Device Location
Vulnerabilities13%Overall increasein reportedvulnerabilities29%Increase inindustrialcontrol system(ICS) relatedvulnerabilities
01IntroductionPage 12ISTR March 2018MethodologySymantec has established the largest civilian threat collectionnetwork in the world, and one of the most comprehensivecollections of cyber security threat intelligence through theSymantec Global Intelligence Network. The Symantec GlobalIntelligence Network comprises more than 126.5 million attacksensors, recording thousands of threat events every second,and contains over five petabytes of security threat data. Thisnetwork also monitors the threat activities for over 175 millionendpoints located in 157 countries and territories through acombination of Symantec products, technologies, and services,including Symantec Endpoint Protection software, theSymantec DeepSight Intelligence service, Symantec ManagedSecurity Services offering, Norton consumer products, andother third-party data sources.gence gained through our partnership with more than 15,000 ofthe largest global enterprises.In addition, Symantec maintains one of the world’s mostcomprehensive vulnerability databases, currently consisting ofmore than 95,800 recorded vulnerabilities (gathered over morethan two decades) from 25,000 vendors representingover 78,700 products.Symantec Endpoint Protection Mobile (SEP Mobile) offersunparalleled depth of mobile threat intelligence which is usedto predict, detect, and protect against the broadest range ofexisting and unknown threats. SEP Mobile’s predictive technology uses a layered approach that leverages massive crowdsourced threat intelligence, in addition to both device-basedand server-based analysis, to proactively protect mobile devicesfrom malware, network threats, and app and OS vulnerabilityexploits.Analysis of spam, phishing, and email malware trends isgathered from a variety of Symantec email security technologies processing more than 2.4 billion emails each day,including: Symantec Messaging Gateway for Service Providers,Symantec Email Security.cloud, Symantec Advanced ThreatProtection for Email, Symantec’s CloudSOC Service, and theSymantec Probe Network.Filtering more than 338 million emails, and over 1.8 billion webrequests each day, Symantec’s proprietary Skeptic technology underlies the Symantec Email and Web Security.cloud services, utilizing advanced machine learning, network trafficanalysis, and behavior analysis to detect even the most stealthyand persistent threats. Additionally, Symantec’s AdvancedThreat Protection for Email uncovers advanced email attacksby adding cloud-based sandboxing, additional spear-phishingprotection, and unique targeted attack identification capabilities. Symantec also gathers phishing information throughan extensive anti-fraud community of enterprises, securityvendors, and partners.Over 1 billion URLs are processed and analyzed each day bySymantec’s Secure Web Gateway solutions, including ProxySG ,Advanced Secure Gateway (ASG), and Web Security Solution(WSS), all powered by our real-time WebPulse CollaborativeDefense technology and Content Analysis System, identifyingand protecting against malicious payloads and controllingsensitive web-based content. This is out of a total of 6 billionweb analysis requests. The technology is supported by ourGlobal Intelligence Network, featuring web and threat intelli-ID Analytics , and ID:A Labs (our dedicated identity researchgroup), provides comprehensive insights into credit and fraudrisks, and is powered by the ID Network . The ID Network is aunique cross-industry repository of up-to-the-minute consumerinformation providing a unique perspective on identity andfraud-related risks. The ID Network also receives outcomebehavior data from third-party enterprises that confirm whenan applicant has been identified as fraudulent within theirportfolio. This continuously updated database of cross-industryconsumer behavior data allows Symantec to identify the riskiestone percent of all applications, for example, including applications for credit cards, auto loans, and wireless phone service.The ISTR also includes analysis by industry sector, for which theStandard Industry Classification (SIC) system for identifyingthe industry sectors for businesses is used. The data relatingto Symantec’s customers and clients is anonymized priorto analysis and grouped according to key attributes such asindustry, company size, and geographical location.Symantec takes every care and precaution to ensure that allof the data presented in this report is produced to the higheststandards and to present an unbiased and objective view of thethreat landscape. Occasionally it has been necessary to filteror adjust the data to avoid bias or skewing, and this is statedin the report where required. For further information on theproducts, services and technologies mentioned, please refer tothe Further Information section and Contacts at the back ofthis report.These resources give Symantec analysts unrivalled sourcesof data with which to identify, analyze, and provide informedcommentary on emerging trends in cyber attacks, maliciouscode activity, phishing, and spam. The result is the annualSymantec Internet Security Threat Report , which gives enterprises, small businesses, and consumers essential informationto help secure their systems effectively now and into the future.Back to Table of Contents
Year inRevie02Section
The Cyber CrimeThreat Landscape
ISTR March 2018The Cyber Crime Threat LandscapePage 152017 was an interesting year on the cyber crimethreat landscape. The WannaCry and Petya/NotPetya attacks made headlines, but they wereexceptions and masked the first indications of ashift, in the ransomware landscape in particular.While ransomware remains a major threat, itseems some ransomware criminals have beenbusy adding more strings to their bow: in somecases distributing financial Trojans and in othercases turning to cryptocurrency coin mining.The growth in coin mining in the final months of 2017 wasimmense. Overall coin-mining activity increased by 34,000percent over the course of the year, while file-based detections of coinminers on endpoint machines increased by 8,500percent. There were more than 8 million coin-mining eventsblocked by Symantec in December 2017 alone. These numbersare quite mind-boggling, but this explosion in activity maybe short lived. Coin-mining activity is strongly linked to theincrease in value of many cryptocurrencies; a sustained drop intheir value may lead to this activity going down just as quicklyas it went up.Some online banking threats felt the impact of major takedowns that took place in late 2016, but others managedto make a breakthrough. In particular, the Emotet (Trojan.Emotet) banking Trojan reemerged after a long hiatus.Emotet’s activity ramped up in the last few months of 2017,with detections increasing by 2,000 percent in this period.At the same time, the growth of coinminers, and their use bycyber criminals, grabbed headlines.The growth in coin“miningin the final monthsof 2017 was immense.Overall coin-miningactivity increased by34,000 percent overthe course of theyear; while file-baseddetections of coinminerson endpoint machinesincreased by 8,500percent.”RansomwareThe ransomware landscape in 2017 was dominated by thestories of the WannaCry (Ransom.Wannacry) and Petya/NotPetya (Ransom.Petya) attacks, but they were not “typical”ransomware attacks, and don’t represent the overall trend forransomware in 2017. In fact, Petya/NotPetya was not a realransomware, it was a destructive wiper that masqueraded asransomware. For these reasons, we have omitted detectionsof these threats from our ransomware detection counts inthis chapter. The impact and significance of these attacks iscovered elsewhere in this report, in the article on Ransomware: More Than Just Cyber Crime.Ransomware infections had steadily increased year-over-yearsince 2013, and reached a record high of 1,271 detectionsper day in 2016. Ransomware detections failed to break thatrecord in 2017, but remained at those elevated levels. WithWannaCry and Petya/NotPetya excluded from detectionnumbers, there were approximately 1,242 average ransomware detections every day in 2017, roughly the same as 2016’srecord-breaking number.Ransomware detections per day 2015-2017If we exclude WannaCry and Petya/NotPetya, ransomware detections werestable between 2016 and *Numbers exclude WannaCry and Petya/NotPetyaBack to Table of Contents
1.63.0Page 16MillionThe Cyber Crime Threat Landscape0.4ISTR March 2018There was a92%increase inblocks ofdownloadersin 20172015 2016 2017Improved detections“earlierin the attack chainby Symantec mean thesedownloaders are beingdetected and blockedbefore they drop theirfinal payload.”A stabilizing of ransomware detections on the endpoint maynot necessarily be an indication of drops in activity, but couldalso be indicative of the impact of improved upstream protection. Effective email filtering, Intrusion Prevention System(IPS) detection, and machine learning technology mean thatransomware activity is being blocked earlier in the infectionchain. For example, in 2017 we saw a 92 percent increase inblocks of script and macro downloaders, a major source ofransomware infections. Improved detections earlier in theattack chain by Symantec mean these downloaders are beingdetected and blocked before they drop their final payload.Viewing ransomware as a business, it’s clear that the profitability of ransomware in 2016 led to a crowded market andclear overpricing of ransom demands from greedy criminals.In 2017, the market made a correction, with fewer newransomware families and lower ransom demands. Ransomware authors honed their business model in 2017, seemingBack to Table of Contents
ISTR March 2018The Cyber Crime Threat LandscapePage 17to find the sweet spot victims are willing to pay. The averageransom demand for 2017 was 522, which is less than halfof 2016’s figure of 1,070, and is also a decrease from themid-year average, which was 544.New ransomware variants 2015-2017In 2017, 28 new ransomware families appeared, which is onpar with 2014 and 2015, but a drop on 2016, when an unprecedented 98 new families were discovered.The number of new ransomware variants seen increased by 46 percent in 0,000“There were also declinesin activity from someof the big ransomwarefamilies in 2017. Cerber,Locky, and TorrentLockerall but disappeared fromthe scene over the courseof the year.”100,00050,000201520162017There were also declines in activity from some of the bigransomware families in 2017. Cerber (Ransom.Cerber), Locky(Ransom.Locky), and TorrentLocker (Ransom.TorrentLocker) allbut disappeared from the scene over the course of the year.Despite this, the Necurs (Backdoor.Necurs) botnet, one ofthe main distributors of Locky, had a big impact on the cybercrime threat landscape in 2017. Necurs disappeared formuch of the first three months of 2017—reappearing just assuddenly on March 20 when it started sending out stock spam.Its absence was immediately felt, with a major drop in emailmalware and spam rates for those three months. The ratessteadily increased for the rest of the year, though they neverquite reached 2016 levels.New ransomware families 2015-2017The number of new families observed stabilized in 2017 after a surge in 2016Email malware rate 2016-2017 (1 in)The impact made by Necurs’ absence at the start of 2017 is clearly visible10098908010070200603004040030201 IN503028105006007000201520162017800J F M A M J2016However, the number of overall ransomware variantsincreased by 46 percent, indicating that established ransomware groups continue to develop and propagate their wares.The stable number of new families emerging likely indicatesa lack of new attack groups, or less innovation on the part ofestablished groups.J A S O N D J F M A M J2017J A S O N DDespite its absence at the beginning of the year, Necurs wasstill one of the biggest hitters in cyber crime in 2017. If welook at telemetry for the number of email malware campaignsexecuted by Necurs in 2017 we can see an increase in activityfrom June, with a notable surge in September and October,and some peaks visible right through to the end of the year.Back to Table of Contents
ISTR March 2018The Cyber Crime Threat LandscapePage 18Necurs sent out almost 15 million malicious emails in 2017,with 80 percent of these sent in the second half of the year.More than 67,000 malicious emails were sent by the Necursbotnet every day in the last six months of 2017.were detected on hundreds of thousands of machines in 2016,so their absence had a big impact on financial Trojan numbersoverall. A decline in financial Trojan numbers year-over-yearis a trend that we have seen in the last couple of years. Aswell as the takedowns, some of this decline can be explainedby better detections being in place further upstream, similarto the situation with ransomware, which means that thefinal payload of the financial Trojan may never end up on thevictim’s machine.Necurs email malware campaigns 2017The vast majority of activity occurred in the second half of the year400,000350,000300,000Financial Trojans: Month by month counts 2017250,000Overall, financial Trojan figures in 2017 were down compared to ANFEB MARAPRMAYJUNJULAUGSEPOCTNOVDEC55,00052,000While the main groups behind ransomware distribution arestill very much active, we observed a greater number of emailcampaigns distributing online banking threats and, in somecases, replacing ransomware campaigns. If we look at Necursactivity for the final six months of the year, we can see that itsfinal payloads alternated between ransomware and financialmalware.Necurs payloads H2 2017Necurs primarily distributed ransomware, but it also sent out some financialTrojan GSEPOCTNOV DECOnline banking ULAUGSEPOCTNOVDECDespite the overall drop, we can see that activity is trendingup in the second half of the year. This is primarily due to theEmotet banking Trojan, which had a surge of activity in the lastquarter of 2017.Emotet: Making an impactEmotet is a financial Trojan that first emerged in 2014 and,after a quiet period, reappeared to make waves in the secondhalf of 2017. Its activity has steadily increased, particularly inthe last few months of the year, with its activity increasing by2,000 percent in the final quarter of 2017. Primarily deliveredthrough large email campaigns, the group behind Emotetappears to be a “professional” cyber crime group, with mostcampaigns being deployed Monday to Friday, with the groupappearing to take the weekend off. The threat is primarilydeployed via spam campaigns sent out by the Emotet botnet; aswell as stealing information from infected devices, the malwareis also capable of adding infected devices to the botnet.Despite attention from Necurs, overall financial Trojan activityfell in 2017 compared to 2016, primarily due to law enforcement action. Two financial Trojans that were major players in2016—Trojan.Bebloh and Trojan.Snifula—largely disappearedin 2017 as the criminal gangs operating them were both hitby takedowns towards the end of 2016. Both of these TrojansBack to Table of Contents
ISTR March 2018The Cyber Crime Threat LandscapePage 19Emotet detectionsit will enable remote access and attempt to carry out largerfraud, rather than just stealing online banking credentials.In another example of a threat evolving in 2017, Trickybot(Trojan.Trickybot) integrated the EternalBlue exploit to allowit to spread across networks. EternalBlue, of course, was mostfamously used in the WannaCry and Petya/NotPetya attacks,with Trickybot apparently incorporating it following the Petya/NotPetya outbreak.Emotet detections rose sharply in the final months of 201716,00014,00012,00010,0008,0006,0004,000Top 10 financial Trojans nit and Zbot dominated, but Emotet, the fifth most detected, made a bigimpact towards the end of the year60%“Emotet is a financialTrojan that first emergedin 2014 and, after a quietperiod, reappeared tomake waves in thesecond half of 2017.”Emotet saw a particular uptick in activity in November andDecember. While, overall, it’s only fifth in our list of top 10financial Trojans in 2017—and is dwarfed by Ramnit (W32.Ramnit) and Zbot (Trojan.Zbot), which both dominated thefinancial Trojans list in 2016 too—its reemergence andincreasing activity is interesting, and will be significant if itcontinues into 2018. Emotet’s activity did decrease during theDecember holiday period, but it appears its operators mayjust have been taking a break, as it returned to its year-endactivity levels at the start of 2018. If it maintains those levelsof activity for the year it’s likely to be higher up our list of topfinancial Trojans next year.While the reemergence of Emotet was the most interestingdevelopment in this space in 2017, other online bankingthreats also evolved. Some financial Trojans began stealingnot just online banking credentials but cryptocurrency walletlogins and any other account details that may help maximizeprofits.Dridex (Trojan.Cridex), which is third in our top 10 list offinancial Trojans for 2017, now checks the software installedon the devices it has infected. If it detects accounting software5040302010nitRamtttxxkeahZbo Cride ickybo Emote hyloc Beblo Sniful ande RetefPSTrWhile some ransomware groups switched to distributingfinancial Trojans, we also observed many cyber criminalsturning to coinminers in 2017, with the growth in coin miningin the last quarter of 2017 undoubtedly one of the stories ofthe year.Coin mining: A modern gold rushBefore we examine this growth in coinminers, let us firstexplain what a coinminer is.Coinminers are used to mine cryptocurrencies. Cryptocurrencies are digital currencies: they are created using computerprograms and computing power, and recorded on the blockchain. Bitcoin was the first cryptocurrency developed on theblockchain, and is still the best known and most highly valuedcryptocurrency in existence. However, Bitcoin requires a lotof processing power to mine and so is not a viable option formining on regular computers. However, other cryptocurrencieshave been developed that can more easily be mined using thecomputing power of regular home computers. Monero is theprimary example of this. Monero, unlike Bitcoin, also providesfull anonymity.File-based coin mining involves downloading and running anexecutable file on your computer. Browser-based coin mining,which saw the biggest jump in prevalence in 2017, takes placeinside a web browser and is implemented using scriptinglanguages.Back to Table of Contents
Mining detections31K1.7MAUG2017SEP2017DEC2017 81 104 32120KJAN2017 1229KAvg. Monero price
ISTR March 2018The Cyber Crime Threat LandscapePage 21Coin mining is not illegal, and many people are now choosingto run files or scripts on their computers to carry out coinmining. And, indeed, many people may not object to some oftheir computing power being used to mine cryptocurrencywhen they visit a particular website. It could be a welcomealternative to watching ads, or paying for the content in otherways. For example, media website Salon.com asked visitorswho use an ad blocker to either turn it off or allow theircomputer to be used to carry out coin mining while they areon the website. The problems arise when people aren’t awaretheir computers are being used to mine cryptocurrency, orif cyber criminals surreptitiously install miners on victims’computers or Internet of Things (IoT) devices without theirknowledge.mining events were blocked in December—an increase of34,000 percent since the beginning of the year. File-baseddetections on the endpoint by Symantec products for theseminers jumped by 8,500 percent in 2017. Much of this growthis driven by JS.Webcoinminer which detects activity associatedwith browser-based coinminers.A few factors can help explain the rise in the popularity ofcoinminers among cyber criminals in the latter part of 2017: The main driving force was almost certainly the steep risein value of many cryptocurrencies in the final months of2017. The launch of a new browser-based mining service inSeptember by Coinhive also led to renewed interest inthe area of browser-based mining. We detailed this in ablog published in December 2017. Coinhive is marketedas an alternative to ads for websites seeking to generaterevenue. It recommends that its users are transparentwith site visitors about its presence, but it is somewhatpowerless to prevent unscrupulous operators from using itto carry out secret mining with the hope that users won’tnotice. Carrying out browser-based coin mining does not requireCoinminers made up 24“percentof all web attacksblocked in December2017, and 16 percent ofweb attacks blocked in thelast three months of 2017,demonstrating the bigimpact of these browserbased coinminers.”Coin-mining events 2017Total coin-mining activity blocked by Symantec increased by more than 34,000percent during 2017the same level of skill as developing an exploit and installing it on victims’ computers, and it also means that evenpeople whose machines are fully patched are potentialvictims.necessarily immediately realize they are infected, if theyever do. They may notice that their computer is performing more slowly or that their electricity bill has increaseddue to their computer using more power, but if the impactis only minor victims may not make the connection tocoin mining. This allows cyber criminals to make moneywithout victims even realizing they have somethingunwanted on their machine or on the website they arevisiting. Ransomware does not allow cyber criminals to flyunder the radar in this way.The growth in coin-mining events blo
Symantec Email Security.cloud, Symantec Advanced Threat Protection for Email, Symantec’s CloudSOC Service, and the Symantec Probe Network. Filtering more than 338 million emails, and over 1.8 billion web requests each day, Symantec’s proprietary Skeptic technol
the result is the Symantec internet Security threat report, which gives enterprises and consumers essential information to effectively secure their systems now and into the future. this volume of the Symantec Government Internet Security Threat Report will alert readers to current trends and impending thre
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The Symantec Internet Security Threat Reportprovides a six-month update about Internet threat activity1. It includes analysis of network-based attacks, a review of known vulnerabilities, and highlights of malicious code. This summary
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