Tag Archives: Paypal

Oregon Man Charged in ‘Rapper Bot’ DDoS Service

August 19, 2025

A 22-year-old Oregon man has been arrested on suspicion of operating “Rapper Bot,” a massive botnet used to power a service for launching distributed denial-of-service (DDoS) attacks against targets — including a March 2025 DDoS that knocked Twitter/X offline. The Justice Department asserts the suspect and an unidentified co-conspirator rented out the botnet to online extortionists, and tried to stay off the radar of law enforcement by ensuring that their botnet was never pointed at KrebsOnSecurity.

Big Tech’s Mixed Response to U.S. Treasury Sanctions

July 3, 2025

In May 2025, the U.S. government sanctioned a Chinese national for operating a cloud provider linked to the majority of virtual currency investment scam websites reported to the FBI. But more than a month later, the accused continues to openly operate accounts at a slew of American tech companies, including Facebook, Github, LinkedIn, PayPal and Twitter/X.

Oops: DanaBot Malware Devs Infected Their Own PCs

May 22, 2025

The U.S. government today unsealed criminal charges against 16 individuals accused of operating and selling DanaBot, a prolific strain of information-stealing malware that has been sold on Russian cybercrime forums since 2018. The FBI says a newer version of DanaBot was used for espionage, and that many of the defendants exposed their real-life identities after accidentally infecting their own systems with the malware.

China-based SMS Phishing Triad Pivots to Banks

April 10, 2025

China-based purveyors of SMS phishing kits are enjoying remarkable success converting phished payment card data into mobile wallets from Apple and Google. Until recently, the so-called “Smishing Triad” mainly impersonated toll road operators and shipping companies. But experts say these groups are now directly targeting customers of international financial institutions, while dramatically expanding their cybercrime infrastructure and support staff.

PayPal Phishing Scam Uses Invoices Sent Via PayPal

August 18, 2022

Scammers are using invoices sent through PayPal.com to trick recipients into calling a number to dispute a pending charge. The missives — which come from Paypal.com and include a link at Paypal.com that displays an invoice for the supposed transaction — state that the user’s account is about to be charged hundreds of dollars. Recipients who call the supplied toll-free number to contest the transaction are soon asked to download software that lets the scammers assume remote control over their computer.

How Phishers Are Slinking Their Links Into LinkedIn

February 3, 2022

If you received a link to LinkedIn.com via email, SMS or instant message, would you click it? Spammers, phishers and other ne’er-do-wells are hoping you will, because they’ve long taken advantage of a marketing feature on the business networking site which lets them create a LinkedIn.com link that bounces your browser to other websites, such as phishing pages that mimic top online brands (but chiefly Linkedin’s parent firm Microsoft).

The Risk of Weak Online Banking Passwords

August 5, 2019

If you bank online and choose weak or re-used passwords, there’s a decent chance your account could be pilfered by cyberthieves — even if your bank offers multi-factor authentication as part of its login process. This story is about how crooks increasingly are abusing third-party financial aggregation services like Mint, Plaid, Yodlee, YNAB and others to surveil and drain consumer accounts online.

Following the Money Hobbled vDOS Attack-for-Hire Service

June 6, 2017

A new report proves the value of following the money in the fight against dodgy cybercrime services known as “booters” or “stressers” — virtual hired muscle that can be rented to knock nearly any website offline.

Last fall, two 18-year-old Israeli men were arrested for allegedly running a vDOS, perhaps the most successful booter service of all time. The pair were detained within hours of being named in a story on this blog as the co-proprietors of the service (this site would later suffer a three-day outage as a result of an attack that was alleged to have been purchased in retribution for my reporting on vDOS).

That initial vDOS story was based on data shared by an anonymous source who had hacked vDOS and obtained its private user and attack database. The story showed how the service made approximately $600,000 over just two of the four years it was in operation. Most of those profits came in the form of credit card payments via PayPal.

But prior to vDOS’s takedown in September 2016, the service was already under siege thanks to work done by a group of academic researchers who teamed up with PayPal to identify and close accounts that vDOS and other booter services were using to process customer payments. The researchers found that their interventions cut profits in half for the popular booter service, and helped reduce the number of attacks coming out of it by at least 40 percent.

Who Ran Leakedsource.com?

February 15, 2017

Late last month, multiple news outlets reported that unspecified law enforcement officials had seized the servers for Leakedsource.com, perhaps the largest online collection of usernames and passwords leaked or stolen in some of the worst data breaches — including billions of credentials for accounts at top sites like LinkedIn, Myspace, and Yahoo.

In a development that may turn out to be deeply ironic, it seems that the real-life identity of Leakedsource’s principal owner may have been exposed by many of the same stolen databases he’s been peddling.