One of the largest botnets in existence has lost access to more than a quarter of the infected machines it controlled.
Security experts at Symantec say a single Chinese hacking group called "Hidden Lynx" is involved in a recent series of high-profile cyberattacks on U.S. interests.
Symantec has discovered a bizarre ransom Trojan that eschews the usual demand for payment in favor of asking its victims to fill in an online survey to get an unlock code.
Almost two-thirds of data breaches in 2012 could be attributed to negligence or human error and system glitches, reported the eighth annual Ponemon Global Cost of a Data Breach study.
The prodigious Shylock banking Trojan is still being upgraded and is apparently moving from its traditional targets in UK financial services to foreign ones, Symantec reports.
Security researchers from Symantec have identified an information-stealing Trojan program that was used to infect computer servers belonging to various U.S. financial institutions.
Symantec has spotted another odd piece of malware that appears to be targeting Iran and is designed to meddle with SQL databases.
The problem of ransom malware has reached epidemic proportions and could be extracting fraudulent payments from as many as 3 percent of victims, a Symantec report has calculated.
Ransomware activity is increasing in Europe, the U.S., and Canada, and security vendor Symantec expects new forms of malware to take a monetary focus.
The malicious code -- also called Disttrack -- may be part of a directed attack at energy companies, but could take down other systems in its wake.