A working exploit that takes advantage of a previously unknown critical security hole in Internet Explorer has been published online. Experts say the vulnerability is being actively exploited in the wild, and that it appears to be connected to the same group of Chinese hackers responsible for unleashing a pair of Java zero-day exploits late last month.
A Web site that sells Social Security numbers, bank account information and other sensitive data on millions of Americans appears to be obtaining at least some of its records from a network of hacked or complicit payday loan sites.
Microsoft said Thursday that it convinced a U.S. federal court to grant it control over a botnet believed to be closely linked to counterfeit versions Windows that were sold in various computer stores across China. The legal victory also highlights a Chinese Internet service that experts say has long been associated with targeted, espionage attacks against U.S. and European corporations.
Researchers in the United Kingdom say they’ve discovered mounting evidence that thieves have been quietly exploiting design flaws in a security system widely used in Europe to prevent credit and debit card fraud at cash machines and point-of-sale devices.
This blog has featured several stories on reshipping scams, which recruit willing or unwitting U.S. citizens (“mules”) to reship abroad pricey items that are paid for with stolen credit cards. Today’s post highlights a critical component of this scheme: the black-market sale of international shipping labels fraudulently purchased from the U.S. Postal Service.
Attackers have seized upon a previously unknown security hole in Oracle’s ubiquitous Java software to break into vulnerable systems. So far, the attacks exploiting this weakness have been targeted and not widespread, but it appears that the exploit code is now public and is being folded into more widely-available attack tools such as Metasploit and exploit kits like BlackHole.
KrebsOnSecurity has obtained an exclusive look inside the back-end operations of the recently-destroyed Grum spam botnet. It appears that the crime machine was larger and more complex than many experts had imagined. It also looks like my previous research into the identity of the Grum botmaster was right on target.
The U.S Federal Bureau of Investigation is warning about an uptick in online extortion scams that impersonate the FBI and frighten people into paying fines to avoid prosecution for supposedly downloading child pornography and pirated content. This post offers an inside look at one malware gang responsible for orchestrating such scams.
In an alert published last week, the FBI said that The Internet Crime Complaint Center — a partnership between the FBI and the National White Collar Crime Center — was “getting inundated with complaints” from consumers targeted or victimized by the scam, which uses drive-by downloads to hijack host machines. The downloaded malware displays a threatening message (see image to the right) and blocks the user from doing anything else unless he pays the fine or finds a way to remove the program.
Hacked Web sites aren’t just used for hosting malware anymore. Increasingly, they are being retrofitted with tools that let miscreants harness the compromised site’s raw server power for attacks aimed at knocking other sites offline.
It has long been standard practice for Web site hackers to leave behind a Web-based “shell,” a tiny “backdoor” program that lets them add, delete and run files on compromised server. But in a growing number of Web site break-ins, the trespassers also are leaving behind simple tools called “booter shells,” which allow the miscreants to launch future denial-of-service attacks without the need for vast networks of infected zombie computers.
During the last week of July, a series of steadily escalating cyber attacks directed at my Web site and hosting provider prevented many readers from being able to reach the site or read the content via RSS. Sorry about that. What follows is a post-mortem on those digital sieges, which featured a mix of new and old-but-effective attack methods.