Yahoo says removes malware from its advertising networkAugust 4, 2015 - 09:06 AMT PanARMENIAN.Net - Yahoo said Monday, Aug 3, it removed malware from its advertising network, after malicious code there had gone undetected for at least six days, PCWorld reports. Security researchers at Malwarebytes said they discovered malicious ads planted in Yahoo’s network on Sunday and alerted Yahoo. The malware attack had been underway since last Tuesday, wrote Jerome Segura, a senior security researcher at Malwarebytes Labs. The malware was found in Yahoo’s ads network at ads.yahoo.com, which runs ads across Yahoo’s sites like its finance, games and news portals, as well as Yahoo.com. Users may have come across the infected ads when visiting Yahoo’s sites. A Yahoo spokeswoman declined to say how many advertisers were affected. The attack used a method known as malvertising, in which attackers dupe online publishers into running malicious ads. They look like any other ads and may not require any interaction from users to infect their machines. If a visitor comes across a malicious ad, it can cause their browser to redirect to another site that attacks their computer. In Yahoo’s case, Malwarebytes detected ransomware, which encrypts files on users’ computers unless they pay money to the attackers. The malware had also targeted sites hosted by Microsoft’s Azure cloud platform, Malwarebytes said. It’s not the first time Yahoo’s system has been hit with malvertising. Last year, an aggressive campaign was discovered that affected visitors across Yahoo and AOL’s sites. Malvertising might be becoming more prevalent in general. Last week, security company Cyphort said 10 million people may have visited websites carrying malicious ads in the last 10 days alone. Experts advise users to keep their operating systems, browsers and browser plug-ins up to date to avoid becoming infected by malvertising. Yahoo visitors can also run a scan with their antivirus or anti-malware software, Malwarebytes said. Top stories Yerevan will host the 2024 edition of the World Congress On Information Technology (WCIT). Rustam Badasyan said due to the lack of such regulation, the state budget is deprived of VAT revenues. Krisp’s smart noise suppression tech silences ambient sounds and isolates your voice for calls. Gurgen Khachatryan claimed that the "illegalities have been taking place in 2020." Partner news Most popular in the section | Scholz hopes Armenia-Azerbaijan peace treaty will be signed this year German Chancellor Olaf Scholz hopes that a peace treaty between Armenia and Azerbaijan will be signed this year. Armenia, Russia discuss life extension of Metsamor nuclear plant Issues regarding the extension of life of the 2nd power unit of the Armenian Nuclear Power Plant were discussed in Yerevan. Armenians stage more campaigns against territorial concessions to Azerbaijan Protesters blocked more roads across Armenia on Friday, April 26 in continuing attempts to scuttle territorial concessions to Azerbaijan. Czech-Armenian military cooperation discussed in Yerevan A delegation led by the Director General for the Industrial Cooperation Division of the Ministry of Defence of the Czech Republic visited Armenia. |