Krebs on Security

The U.S. Federal Bureau of Investigation (FBI) says it has disrupted a giant botnet built and operated by a Russian government intelligence unit known for launching destructive cyberattacks against energy infrastructure in the United States and Ukraine. Separately, law enforcement agencies in the U.S. and Germany moved to decapitate "Hydra," a billion-dollar Russian darknet drug bazaar that also helped to launder the profits of multiple Russian ransomware groups.

Many organizations are already struggling to combat cybersecurity threats from ransomware purveyors and state-sponsored hacking groups, both of which tend to take days or weeks to pivot from an opportunistic malware infection to a full blown data breach. But few organizations have a playbook for responding to the kinds of virtual "smash and grab" attacks we've seen recently from LAPSUS$, a juvenile data extortion group whose short-lived, low-tech and remarkably effective tactics are putting some of the world's biggest corporations on edge.

On Tuesday, KrebsOnSecurity warned that hackers increasingly are using compromised government and police department email accounts to obtain sensitive customer data from mobile providers, ISPs and social media companies. Today, one of the U.S. Senate's most tech-savvy lawmakers said he was troubled by the report and is now asking technology companies and federal agencies for information about the frequency of such schemes.

There is a terrifying and highly effective "method" that criminal hackers are now using to harvest sensitive customer data from Internet service providers, phone companies and social media firms. It involves compromising email accounts and websites tied to police departments and government agencies, and then sending unauthorized demands for subscriber data while claiming the information being requested can't wait for a court order because it relates to an urgent matter of life and death.

An Estonian man was sentenced today to more than five years in a U.S. prison for his role in at least 13 ransomware attacks that caused losses of approximately $53 million. Prosecutors say the accused also enjoyed a lengthy career of "cashing out" access to hacked bank accounts worldwide.

Most of us have probably heard the term "smishing" -- which is a portmanteau for traditional phishing scams sent through SMS text messages. Smishing messages usually include a link to a site that spoofs a popular bank and tries to siphon personal information. But increasingly, phishers are turning to a hybrid form of smishing -- blasting out linkless text messages about suspicious bank transfers as a pretext for immediately calling and scamming anyone who responds via text.

Most of us have probably heard the term "smishing" -- which is a portmanteau for traditional phishing scams sent through SMS text messages. Smishing messages usually include a link to a site that spoofs a popular bank and tries to siphon personal information. But increasingly, phishers are turning to a hybrid form of smishing -- blasting out linkless text messages about suspicious bank transfers as a pretext for immediately calling and scamming anyone who responds via text.

Microsoft Corp. today released updates to quash at least 55 security bugs in its Windows operating systems and other software. Two of the patches address vulnerabilities that are already being used in active attacks online, and four of the flaws were disclosed publicly before today -- potentially giving adversaries a head start in figuring out how to exploit them.

The U.S. Department of Justice said today it arrested a Ukrainian man who deployed ransomware on behalf of the REvil ransomware gang, a Russian cybercriminal collective that has extorted hundreds of millions from victim organizations. The DOJ also said it had seized $6.1 million in cryptocurrency sent to another REvil affiliate, and that the State Department is now offering up to $10 million for information leading to the arrest of any key leaders of REvil.

The holiday shopping season always means big business for phishers, who tend to find increased success this time of year with a time-honored lure about a wayward package that needs redelivery. Here's a look at a fairly elaborate SMS-based phishing scam that spoofs FedEx in a bid to extract personal and financial information from unwary recipients.