Unit 221B is a cybersecurity company offering products & services to companies seeking discreet, best-in-class, advanced security operations and training

Joined August 2015
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15 Apr 2024
For those who missed the live viewing @60Minutes last night on @CBS , @nixonnixoff discusses Unit 221B research on “Scattered Spider” and how Russian crime groups are starting to work together with young criminals in the west. youtu.be/lEwC1tN2jb8?si=AnQ5… #media #ransomware
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22 Sep 2025
We’re excited to share that @TechCrunch has covered an important milestone for Unit 221B: our $5M raise to expand efforts against some of today’s most dangerous hacking groups. Read the full story here: go.unit221b.com/46yDYeS
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19 Sep 2025
In this latest from @CyberScoopNews, @nixonnixoff lends her expert perspective to the latest arrests of two teenagers in the U.K. whose collective charges include extortion of at least 47 U.S.-based organizations and alleged involvement in an attack on Transport for London.
Two teenagers were arrested in the United Kingdom this week, accused of associating with the sprawling criminal collective known as The Com, and participating in many high-profile and damaging cyberattacks on critical infrastructure globally. hubs.li/Q03K6m0x0
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12 Sep 2025
Congratulations to @nixonnixoff on being featured in @HBO's "Most Wanted: Teen Hacker", a four-part docuseries following the case of Finnish hacker Julius Kivimäki, aka "Zeekill". Add the show to your watch queue here: go.unit221b.com/48e5UY0
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1 Aug 2025
Another feature for @nixonnixoff in the wake of the FBI's recent PSAs: "There has been a population explosion in The Com and it is good to see law enforcement respond to this—not just with a PSA but with real crackdowns."
The FBI released a trove of research on The Com last week, warning that the sprawling cybercriminal network of minors and young adults is growing rapidly and splintering into three primary subsets described by officials as Hacker Com, In Real Life Com and Extortion Com. The warnings lay out how The Com’s thousands of members, typically between 11 and 25 years old, pose a rising threat, especially to youth online, the FBI said. Criminal acts committed by these multiple, interconnected networks include swatting, extortion and sextortion of minors, production and distribution of child sexual abuse material, violent crime and various other cybercrimes, the bureau said. scoopmedia.co/4omcK3y
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30 Jul 2025
Our Chief Research Officer Allison Nixon will be keynoting @BSidesLV next Monday, August 4th at 11:30 AM PT! Let us know if you'll be in Vegas for #cybersecurity conference central and want to connect with our team. For more info on Allison's talk: go.unit221b.com/46v02Jd
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25 Jul 2025
Thank you @arstechnica for shouting out our CRO Allison Nixon's work in this case! So many of these threat actors think they can operate with impunity and anonymity—shifting that perspective will help in dismantling these networks.
Hackers—hope to defect to Russia? Don’t Google “defecting to Russia.” arstechnica.com/security/202…
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17 Jul 2025
Unit 221B has spent years focused on our capacity to disrupt threat actors & drive real-world arrests. This week @TheJusticeDept announced a guilty plea from "kiberphant0m": work led at 221B by our Chief Research Officer, Allison Nixon. Read the release: go.unit221b.com/4lDoDQK
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5 Nov 2024
Canadian authorities apprehend hacker known as Waifu after extensive investigation. We’re very proud of our investigators for their contributions to help apprehend this notorious threat actor; Unit 221B remains committed to making the online world safer. go.unit221b.com/3YUA1yw

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9 Oct 2024
Check out our first co-authored article with one of our most valued partners, @Overwatch_data, titled “Fraudsters Responding to Telegram’s New Policies"! Explore how these policy changes are impacting fraudsters and the broader cybersecurity landscape: go.unit221b.com/481jyf2

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20 Sep 2024
Honored by @Intel471Inc's shoutout to our founder & CIO Lance James for discovering Zeus! Jason Passwaters’ story of bringing a cybercriminal to justice shows the dedication of all involved. Congrats to everyone who helped in this fight against cybercrime! go.unit221b.com/3XQtJzH

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