Thursday, May 15, 2025
HomeCyber AttackDOJ Says SolarWinds Hackers Accessed 3% of it's Office 365 Mailboxes

DOJ Says SolarWinds Hackers Accessed 3% of it’s Office 365 Mailboxes

Published on

SIEM as a Service

Follow Us on Google News

The U.S. Department of Justice declared its emails accounts were breached by SolarWinds hackers. Their email systems have been accessed by the hackers who broke into the software company SolarWinds, another sign of the severity of the breach that has shaken Washington.

This activity involved access to the Department’s Microsoft Office 365 email environment. The department has more than 100,000 employees across a series of law enforcement agencies, including the FBI, the Drug Enforcement Agency, and the US Marshals Service.

“After detecting the malicious activity, the OCIO eliminated the identified method by which the actor was accessing the Office 365 email environment”, says DOJ spokesperson Marc Raimondi.

- Advertisement - Google News

Around 3% of the Office 365 mailboxes were potentially accessed by hackers. The report says the Justice Department had no indication that any classified systems were impacted.

“It’s still very bad if they got the contents of 3,000 accounts,” said Taddeo, who at present works as the Chief Information Security Officer for data center firm Cyxtera Technologies.

The Justice Department’s Office of the Chief Information Officer discovered the breach on the day before Christmas, nearly two weeks after Reuters first reported that hackers suspected of acting on Russia’s behalf had broken into US government networks.

Russia has refused responsibility for the hacking campaign, which has been described as one of the most complicated operations revealed in years.

Cybersecurity experts said complete recovery from the breaches could take months or even longer.

“As part of the ongoing technical analysis, the Department has determined that the activity constitutes a major incident under the Federal Information Security Modernization Act, and is taking the steps consistent with that determination. 

The Department will continue to notify the appropriate federal agencies, Congress, and the public as warranted.”, according to Marc Raimondi.

You can follow us on LinkedinTwitterFacebook for daily Cybersecurity, and hacking news updates.

Also Read

DHS Urges US govt agencies to Update SolarWinds Orion Software

FBI, CISA, ODNI, and NSA Says Russian Threat Actors Behind SolarWinds Hack

SolarWinds Hackers Aimed to Access Victim Cloud Assets after deploying the Solorigate Backdoor

Gurubaran
Gurubaran
Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Latest articles

Enisa Launched New European Vulnerability Database to Strengthen Cybersecurity

European Union Agency for Cybersecurity (ENISA) has officially launched the European Vulnerability Database (EUVD),...

Xanthorox Emerging BlackHat AI Tool Empowering Hackers in Phishing and Malware Campaigns

Artificial intelligence platform named Xanthorox has emerged as a potent new tool for cybercriminals,...

Node.js Vulnerability Enables Attackers to Crash Processes and Disrupt Services

Node.js project has released a critical security update addressing several vulnerabilities that could allow...

Russian Hackers Exploit XSS Vulnerabilities to Inject Malicious Code into Email Servers

A sophisticated cyberespionage campaign, dubbed Operation RoundPress, has been uncovered by cybersecurity researchers at...

Resilience at Scale

Why Application Security is Non-Negotiable

The resilience of your digital infrastructure directly impacts your ability to scale. And yet, application security remains a critical weak link for most organizations.

Application Security is no longer just a defensive play—it’s the cornerstone of cyber resilience and sustainable growth. In this webinar, Karthik Krishnamoorthy (CTO of Indusface) and Phani Deepak Akella (VP of Marketing – Indusface), will share how AI-powered application security can help organizations build resilience by

Discussion points


Protecting at internet scale using AI and behavioral-based DDoS & bot mitigation.
Autonomously discovering external assets and remediating vulnerabilities within 72 hours, enabling secure, confident scaling.
Ensuring 100% application availability through platforms architected for failure resilience.
Eliminating silos with real-time correlation between attack surface and active threats for rapid, accurate mitigation

More like this

Enisa Launched New European Vulnerability Database to Strengthen Cybersecurity

European Union Agency for Cybersecurity (ENISA) has officially launched the European Vulnerability Database (EUVD),...

Xanthorox Emerging BlackHat AI Tool Empowering Hackers in Phishing and Malware Campaigns

Artificial intelligence platform named Xanthorox has emerged as a potent new tool for cybercriminals,...

Node.js Vulnerability Enables Attackers to Crash Processes and Disrupt Services

Node.js project has released a critical security update addressing several vulnerabilities that could allow...