Author Archives: BrianKrebs

Nine Charged in Alleged SIM Swapping Ring

May 10, 2019
51 Comments

Eight Americans and an Irishman have been charged with wire fraud this week for allegedly hijacking mobile phones through SIM-swapping, a form of fraud in which scammers bribe or trick employees at mobile phone stores into seizing control of the target’s phone number and diverting all texts and phone calls to the attacker’s mobile device. From there, the attackers simply start requesting password reset links via text message for a variety of accounts tied to the hijacked phone number.

All told, the government said this gang — allegedly known to its members as “The Community” — made more than $2.4 million stealing cryptocurrencies and extorting people for restoring access to social media accounts that were hijacked after a successful SIM-swap.

What’s Behind the Wolters Kluwer Tax Outage?

May 7, 2019
78 Comments

Early in the afternoon on Friday, May, 3, I asked a friend to relay a message to his security contact at CCH, the cloud-based tax division of the global information services firm Wolters Kluwer in the Netherlands. The message was that the same file directories containing new versions of CCH’s software were open and writable by any anonymous user, and that there were suspicious files in those directories indicating some user(s) abused that access.

Shortly after that report, the CCH file directory for tax software downloads was taken offline. As of this publication, several readers have reported outages affecting multiple CCH Web sites. These same readers reported being unable to access their clients’ tax data in CCH’s cloud because of the ongoing outages.

Feds Bust Up Dark Web Hub Wall Street Market

May 3, 2019
66 Comments

Federal investigators in the United States, Germany and the Netherlands announced today the arrest and charging of three German nationals and a Brazilian man as the alleged masterminds behind the Wall Street Market (WSM), one of the world’s largest dark web bazaars that allowed vendors to sell illegal drugs, counterfeit goods and malware. Now, at least one former WSM administrator is reportedly trying to extort money from WSM vendors and buyers (supposedly including Yours Truly) — in exchange for not publishing details of the transactions.

Credit Union Sues Fintech Giant Fiserv Over Security Claims

May 3, 2019
41 Comments

A Pennsylvania credit union is suing financial industry technology giant Fiserv, alleging that “baffling” security vulnerabilities in the company’s software are “wreaking havoc” on its customers. The credit union said the investigation that fueled the lawsuit was prompted by a 2018 KrebsOnSecurity report about a glaring security weakness a Fiserv platform that exposed personal and financial details of customers across hundreds of bank Web sites.

Data: E-Retail Hacks More Lucrative Than Ever

April 30, 2019
60 Comments

For many years and until quite recently, credit card data stolen from online merchants has been worth far less in the cybercrime underground than cards pilfered from hacked brick-and-mortar stores. But new data suggests that over the past year, the economics of supply-and-demand have helped to double the average price fetched by card-not-present data, meaning cybercrooks now have far more incentive than ever to target e-commerce stores.

Who’s Behind the RevCode WebMonitor RAT?

April 22, 2019
65 Comments

The owner of a Swedish company behind a popular remote administration tool (RAT) implicated in thousands of malware attacks shares the same name as a Swedish man who pleaded guilty in 2015 to co-creating the Blackshades RAT, a similar product that was used to infect more than half a million computers with malware, KrebsOnSecurity has learned.

Wipro Intruders Targeted Other Major IT Firms

April 18, 2019
47 Comments

The criminals responsible for launching phishing campaigns that netted dozens of employees and more than 100 computer systems last month at Wipro, India’s third-largest IT outsourcing firm, also appear to have targeted a number of other competing providers, including Infosys and Cognizant — two other large technology consulting companies, new evidence suggests.

How Not to Acknowledge a Data Breach

April 17, 2019
112 Comments

I’m not a huge fan of stories about stories, or those that explore the ins and outs of reporting a breach. But occasionally it seems necessary to publish such accounts when companies respond to a breach report in such a way that it’s crystal clear that they wouldn’t know what to do with a breach if it bit them in the nose, let alone festered unmolested in some dark corner of their operations.