A password-cracking group claims that, because of coding errors made by Ashley Madison's developers, it has been able to recover 11.2 million users' plaintext passwords. The group believes that up to 15 million of the dating site's passwords can be easily cracked.
Yet another health insurer - Excellus BlueCross BlueShield - has belatedly discovered that its systems were hacked. The breach potentially exposed information on 10.5 million individuals, was discovered in August, but appears to have begun in 2013.
A Latvian hacker's guilty plea for the role he played in enhancing the Gozi Trojan, and reports of other new malware-related arrests, are promising developments in the international fight against cybercrime. Security experts, including Gartner's Avivah Litan, weigh in on the long-term impact.
The gang behind the Carbanak banking malware - tied to $1 billion in fraud - has changed tactics, using upgraded malware via spear-phishing attacks, a security expert warns. Separately, a new banking Trojan called Shifu has been targeting Japanese banking customers.
Mozilla, which maintains the Firefox browser, says an attacker infiltrated its bug-tracking tools, stole information on an unpatched flaw, and exploited users for at least three weeks, before the flaw was patched.
Match.com suspended all advertising on its U.K. site after discovering that one of its third-party advertising provider's networks had been infiltrated by a malware-serving campaign. The incident follows U.K. dating site Plenty of Fish recently falling victim to a similar campaign.
Britain's data protection watchdog is investigating two suspected data breaches - one involving the leak of HIV patients' identities, and the other involving the leak of personal information on magazine subscribers.
Sony Pictures Entertainment has reached a tentative deal to settle a class-action lawsuit filed against it, stemming from its 2014 data breach, which resulted in the leak of personal information for up to 50,000 employees.
International law enforcement agencies are warning banking institutions and businesses about extortion attacks being waged by an entity known as DD4BC, or DDoS for Bitcoin. They're advising organizations not pay any ransom and to notify their ISPs and law enforcement officials of any threats.
Information security experts offer two timely Apple iOS device reminders: First, never jailbreak the devices. Second, enterprise security managers must ensure that they ruthlessly block any jailbroken devices from accessing corporate networks because they pose a security risk.
Lizard Squad, which markets the Lizard Stresser distributed denial-of-service attack tool, appears to have targeted the public-facing website of the U.K.'s National Crime Agency in retaliation for its recent DDoS-tool crackdown.
Former U.S. Secret Service agent Shaun W. Bridges has pleaded guilty to stealing $820,000 worth of bitcoins during the U.S. government's investigation into the underground narcotics marketplace known as "Silk Road."
The FBI estimates fraud losses linked to so-called business email compromise scams worldwide have exceeded $1.2 billion in less than a year. But some financial fraud experts say the losses from this largely overlooked threat could be even higher.
The departure of Noel Biderman as CEO of Avid Life Media, parent company of the infidelity website Ashley Madison, represents a growing recognition of corporate executives' responsibility for data security.