Network World on Security http://www.networkworld.com/topics/security.html The latest security news, analysis, reviews and feature articles from NetworkWorld.com. Network World, Inc. Copyright(C) 1994 - 2013 Network World, Inc. Researchers warn of increased Zeus malware activity this year http://www.networkworld.com/news/2013/052413-researchers-warn-of-increased-zeus-270142.html?source=nww_rss The amount of cybercriminal activity associated with the Zeus family of financial Trojan programs has increased during the past few months, according to security researchers from antivirus vendor Trend Micro. Lucian Constantin 2013-05-24T01:01:03-04:00 Layered defenses largely fail to block exploits, says NSS http://www.networkworld.com/news/2013/052413-layered-defenses-largely-fail-to-270136.html?source=nww_rss Security experts have long touted a layered approach to cyber security as the most effective way to thwart network intruders, and the strategy is most effective when companies use a mix of vendors and security products, NSS Labs found. John P. Mello Jr. 2013-05-24T12:14:00-04:00 Researchers find unusual malware targeting Tibetan users in cyberespionage operation http://www.networkworld.com/news/2013/052413-researchers-find-unusual-malware-targeting-270133.html?source=nww_rss Security researchers from antivirus vendor ESET discovered a piece of cyberespionage malware targeting Tibetan activists that uses unusual techniques to evade detection and achieve persistency on infected systems. Lucian Constantin 2013-05-24T10:41:00-04:00 Google to lengthen SSL encryption keys from August http://www.networkworld.com/news/2013/052413-google-to-lengthen-ssl-encryption-270118.html?source=nww_rss Google plans to upgrade the security of its SSL (Secure Sockets Layer) certificates, an important component of secure communications. Jeremy Kirk 2013-05-24T03:00:00-04:00 Microsoft brushes off claim Xbox Live accounts were compromised http://www.networkworld.com/news/2013/052413-microsoft-brushes-off-claim-xbox-270115.html?source=nww_rss Microsoft brushed off a dubious hacker's claim on Thursday that he stole 47 million account credentials for Microsoft's Xbox Live gaming service. Jeremy Kirk 2013-05-23T10:32:00-04:00 Could the Bitcoin network be used as an ultrasecure notary service? http://www.networkworld.com/news/2013/052413-could-the-bitcoin-network-be-270114.html?source=nww_rss Manuel Araoz, a 23-year-old developer in Argentina, has an idea for Bitcoin that doesn't focus on money. Jeremy Kirk 2013-05-23T09:10:00-04:00 Twitter's two-step authentication a good start, experts say http://www.networkworld.com/news/2013/052313-twitter39s-two-step-authentication-a-good-270110.html?source=nww_rss For celebrities and the average Joe, having two-factor authentication turned on won't protect them against determined hackers, however Antone Gonsalves 2013-05-23T05:19:00-04:00 Twitter's two-step authentication a good start, experts say http://www.networkworld.com/news/2013/052313-twitters-two-step-authentication-a-good-270107.html?source=nww_rss While experts praise Twitter's decision to provide accountholders with two-factor authentication, they warn that additional security will still be needed to prevent the hijacking of high-profile accounts. Antone Gonsalves 2013-05-23T04:27:00-04:00 U.S. urged to let companies 'hack-back' at IP cyber thieves http://www.networkworld.com/news/2013/052313-us-urged-to-let-companies-270108.html?source=nww_rss U.S. companies should be allowed to take aggressive countermeasures against hackers seeking to steal their intellectual property, contends the private Commission on the Theft of American Intellectual Property. Jaikumar Vijayan 2013-05-23T03:29:00-04:00 Researchers find more versions of digitally signed Mac OS X spyware http://www.networkworld.com/news/2013/052313-researchers-find-more-versions-of-270088.html?source=nww_rss Security researchers have identified multiple samples of the recently discovered "KitM" spyware for Mac OS X, including one dating back to December 2012 and targeting German-speaking users. Lucian Constantin 2013-05-23T12:06:00-04:00