Tag Archives: fbi

DHS Warns of ‘TDos’ Extortion Attacks on Public Emergency Networks

April 1, 2013

As if emergency responders weren’t already overloaded: Increasingly, extortionists are launching debilitating attacks designed to overwhelm the telephone networks of emergency communications centers and personnel, according to a confidential alert jointly issued by the Department of Homeland Security and the FBI.

Inside a ‘Reveton’ Ransomware Operation

August 13, 2012

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.

FBI: Smart Meter Hacks Likely to Spread

April 9, 2012

A series of hacks perpetrated against so-called “smart meter” installations over the past several years may have cost a single U.S. electric utility hundreds of millions of dollars annually, the FBI said in cyber intelligence bulletin obtained by KrebsOnSecurity. The law enforcement agency said this is the first known report of criminals compromising the hi-tech meters, and that it expects this type of fraud to spread across the country as more utilities deploy smart grid technology.

Smart meters are intended to improve efficiency, reliability, and allow the electric utility to charge different rates for electricity at different times of day. Smart grid technology also improves a utility’s ability to remotely read meters to determine electric usage.

Court: 4 More Months for DNSChanger-Infected PCs

March 6, 2012

Millions of PCs sickened by a global computer contagion known as DNSChanger were slated to have their life support yanked on March 8. But an order handed down Monday by a federal judge will delay that event by 120 days to give companies, businesses and governments more time to respond to the epidemic.

The reprieve came late Monday, when the judge overseeing the U.S. government’s landmark case against an international cyber fraud network agreed that extending the deadline was necessary “to continue to provide remediation details to industry channels approved by the FBI.”

‘Biggest Cybercriminal Takedown in History’

November 9, 2011

The proprietors of shadowy online businesses that have become synonymous with cybercrime in recent years were arrested in their native Estonia on Tuesday and charged with running a sophisticated click fraud scheme that infected with malware more than four million computers in over 100 countries — including an estimated 500,000 PCs in the United States. The law enforcement action was the result of a multi-year investigation, and is being called the “biggest cybercriminal takedown in history.”

$72M Scareware Ring Used Conficker Worm

June 23, 2011

Authorities seized computers and servers in the United States and seven other countries this week as part of an ongoing investigation of a hacking gang that stole $72 million by tricking people into buying fake anti-virus products. Police in Ukraine said the thieves fleeced unsuspecting consumers with the help of the infamous Conficker worm, although it remains unclear how big a role the fast-spreading worm played in this crime.

FBI Scrubbed 19,000 PCs Snared By Coreflood Botnet

June 21, 2011

The FBI has scrubbed some 19,000 PCs that were infected with the Coreflood bot malware, the agency told a federal court this week. The effort is part of an ongoing and unprecedented legal campaign to tackle one of the longest-running and most menacing online crime machines ever built.

In April, the Justice Department and the FBI were granted unprecedented authority to seize control over a criminal botnet that enslaved millions of computers and to use that power to disable the malicious software on infected PCs. On April 11, 2011, the U.S. Attorney’s Office for the District of Connecticut was granted authority to seize 29 domain names used to control the daily operations of the botnet, and to redirect traffic destined for the control servers to a substitute server that the FBI controlled. More significantly, the FBI was awarded a temporary restraining order (TRO) allowing it to send individual PCs infected with Coreflood a command telling the machines to stop the bot software from running.