DataBreaches.Net

Menu
  • About
  • Breach Notification Laws
  • Privacy Policy
  • Transparency Report
Menu

Update: Kirill Victorovich Firsov Sentenced to 30 Months for Running DEER.io Site Selling Stolen, Counterfeit and Hacked Accounts

Posted on May 24, 2021 by Dissent

The following is a press release from the government with an update to the case of Kirill Victorovich Firsov. Firsov,  the administrator of the DEER.io platform, was arrested on March 7, 2020 and pleaded guilty on January 21 of this year. The DEER.io platform was shut down days after Firsov’s arrest.


SAN DIEGO – Kirill Victorovich Firsov, a Russian citizen, was sentenced to 30 months in custody for his role as the administrator of a website that catered to cyber criminals by virtually selling items such as stolen credit card information, other personal information and services to be used for criminal activity.

The now-defunct online platform DEER.IO started operations as of at least October 2013, and, as of Firsov’s arrest in March 2020, the platform hosted approximately 3,000 active shops with sales exceeding $17 million. Although Firsov maintained that the bulk of the sales on DEER.IO were Russian accounts, the parties agreed that the government could show that shop owners on the DEER.IO platform sold at least $1.2 million in U.S.-based stolen information, to include the gamer accounts identified in the plea agreement.

At sentencing, the prosecutor noted that Firsov built the DEER.IO platform in 2013 and maintained it for almost seven years. Further, the prosecutor asserted that Firsov knew DEER.IO was selling stolen and counterfeit accounts, because he built the platform, which included a number of icons for U.S.-based companies that anyone setting up a store on DEER.IO could click on to then sell stolen accounts from those U.S. companies. Also, DEER.IO was easily searchable, so anyone –including Firsov– could search the platform for stolen U.S. accounts and information. Even though it sold stolen accounts, DEER.IO was not cloaked in secrecy and required no special password for access, because everything was run out of Russia, and American law enforcement could gain no foothold.

DEER.IO sold not only stolen accounts, like the gamer accounts identified in the plea agreement, but also Americans’ personal information, to include names, current addresses, telephone numbers and at times Social Security numbers. On March 4, 2020, the FBI purchased 1,100 gamer accounts, and on March 5, 2020, the FBI purchased the personal information for over 3,600 Americans. On March 7, 2020, Firsov was arrested by the FBI in New York City when he flew into JFK Airport from Moscow.

In sentencing Firsov to 30 months, U.S. District Judge Cynthia Bashant acknowledged that he had been incarcerated in the United States for 15 months, while the COVID-19 pandemic swept the world and, very specifically, the American jail system. She also recognized that Firsov had been incarcerated in the United States, far from his support system of family and friends in Russia.  Finally, she noted that once released, Firsov would likely be incarcerated as he underwent deportation proceedings back to Russia. Nonetheless, she noted that without Firsov’s involvement, there would be no DEER.IO, and that facilitated the sale of stolen property on a large scale. Balancing these factors, Judge Bashant sentenced Firsov to 30 months.

“This platform provided cybercriminals with easy access to the personal accounts and information of people around the world, including Americans,” said Acting U.S. Attorney Randy Grossman. “Stopping that flow of stolen information to criminals is critical to addressing the cybercrime threats facing our country, and we will prosecute those who are responsible.” Grossman commended the excellent work of Assistant U.S. Attorney Alexandra F. Foster and the FBI agents on this case.

“The FBI will pursue cyber-criminals across the globe,” said FBI Special Agent in Charge Suzanne Turner. “Today’s sentence sends a message – conducting criminal activity from outside the United States does not mean you are out of reach. The FBI will identify and pursue criminal actors in the cyber-sphere, regardless of where they operate, and work to bring them to justice in a United States court.”

If victimized in a cyber security incident, the FBI encourages companies to immediately contact the FBI.  Specialized cyber agents will work with companies to protect company information and the personal data of its customers. Please contact the FBI San Diego’s cyber program by calling our field office at (858) 320-1800 or submitting tips at Internet Crime Complaint Center (IC3).

DEFENDANT                                 Case Number 20cr1182-BAS

Kirill Victorovich Firsov         Age:  30                   Moscow, Russia

SUMMARY OF CHARGE

Unauthorized Solicitation of Access Devices (18 U.S.C. § 1029(a)(6))

Maximum Penalty: Ten years in prison, $250,000 fine.

INVESTIGATING AGENCY

FBI

Source:  U.S. Attorney’s Office, Southern District of California


Related:

  • Two suspected Scattered Spider hackers plead not guilty over Transport for London cyberattack
  • Threat actors have reportedly launched yet another campaign involving an application connected to Salesforce
  • Russian hackers target IVF clinics across UK used by thousands of couples
  • Report released on PowerSchool cyber attack
  • Princeton University Data Breach Impacts Alumni, Students, Employees
  • Eurofiber admits crooks swiped data from French unit after cyberattack
Category: HackID Theft

Post navigation

← Indonesian government bans Raid Forums after leak, in talks over data protection bill
Japan’s Biggest Dating App Hack Exposes Two Million Accounts →

Now more than ever

"Stand with Ukraine:" above raised hands. The illustration is in blue and yellow, the colors of Ukraine's flag.

Search

Browse by Categories

Recent Posts

  • Teen who allegedly stole millions of personal data records arrested in Spain
  • Akira ransomware: FBI tallies 250 million in payouts
  • IE: HSE confirms second ransomware attack but ‘no evidence’ patient data was stolen
  • Examining impact of federal relief program after major healthcare cyberattack — Research Brief
  • Justice Department Announces Actions to Combat Two Russian State-Sponsored Hacking Groups
  • Should entities be required to disclose the name of a vendor if the breach was at the vendor’s?
  • The Hidden Risks of Information Disclosure: A Costly Lesson from Cornwall
  • Defense Bill Would Require New Cyber Requirements for Some DoD Telecom Contracts
  • Tell the truth, or someone will tell it for you — Trumbull County, Ohio edition (1)
  • US Posts $10 Million Bounty for Iranian Hackers

No, You Can’t Buy a Post or an Interview

This site does not accept sponsored posts or link-back arrangements. Inquiries about either are ignored.

And despite what some trolls may try to claim: DataBreaches has never accepted even one dime to interview or report on anyone. Nor will DataBreaches ever pay anyone for data or to interview them.

Want to Get Our RSS Feed?

Grab it here:

https://databreaches.net/feed/

RSS Recent Posts on PogoWasRight.org

  • U.S. Plans to Scrutinize Foreign Tourists’ Social Media History
  • ANNOUNCEMENT: EFF Launches Age Verification Hub as Resource Against Misguided Laws
  • FTC Denies Petition from SpyFone App CEO to Vacate 2021 Order
  • Privacy concerns raised as Grok AI found to be a stalker’s best friend
  • PRIVACY—S.D. Cal.: Employee did not waive privacy right in personal email data on company provided laptop, (Dec 5, 2025)

Have a News Tip?

Email: Tips[at]DataBreaches.net

Signal: +1 516-776-7756

Contact Me

Email: info[at]databreaches.net
Security Issue: security[at]databreaches.net
Mastodon: Infosec.Exchange/@PogoWasRight
Signal: Dissent.73
DMCA Concern: dmca[at]databreaches.net
© 2009 – 2025 DataBreaches.net and DataBreaches LLC. All rights reserved.