MOVEit Breach Chain Continues: Cyber Analysts Uncover 600 Breaches and Counting

by / ⠀Featured News / August 8, 2023
MOVEit Breach Chain Continues: Cyber Analysts Uncover 600 Breaches and Counting

In recent months, a massive data breach originating from Progress Software, a prominent American software maker, has wreaked havoc on organizations around the world. The breach, centered on Progress Software’s MOVEit Transfer file management program, has compromised the data of approximately 600 organizations globally, affecting nearly 40 million individuals. This hydra-headed breach, orchestrated by a cybercriminal group known as “cl0p,” has not only exposed sensitive information but has also highlighted the interconnectedness of organizations and the potential for a single software flaw to trigger a global privacy disaster.

The Ripple Effect

The effects of the MOVEit hack went well beyond the intended audience. A wide variety of sectors and organizations have been affected by the attack since the compromised software is used to transfer sensitive data in bulk. For instance, the New York-based Teachers Insurance and Annuity Association of America’s data was compromised when cl0p breached the MOVEit software used by Pension Benefit Information, a company that specializes in tracking surviving family members of pension fund holders. There has been a domino effect of breach notices sent to employees because this company runs pension systems for 15,000 institutional clients.

The domino effect caused by this breach demonstrates the vulnerability of interconnected organizations and the potential for a single compromise to have far-reaching consequences. John Hammond, a researcher at Huntress Security, emphasizes the cascading impact of such breaches, stating, “There’s this domino effect.”

The Extent of the Breach

The breadth of the MOVEit breach is staggering, with estimates suggesting that thousands of companies have been affected. While precise figures on the amount of stolen data and the number of organizations impacted are not publicly available, cybersecurity experts have been diligently tracking the breach. Emsisoft, a cybersecurity firm, has identified 597 victims with approximately 39.7 million individuals affected. These numbers are corroborated by German IT specialist Bert Kondruss, who cross-checked them against public statements, corporate filings, and cl0p’s own posts.

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Diverse Range of Victims

The victims of the MOVEit breach span various sectors, highlighting the widespread impact of the compromised software. Educational organizations, including colleges, universities, and even New York City public schools, account for a quarter of the victims. Emsisoft and Kondruss have identified more than 100 affected educational institutions in the United States alone.

However, the scope of the breach extends well beyond academia. State motor vehicle authorities, such as those in Louisiana and Oregon, have disclosed the compromise of approximately 9 million records. Pension management organizations, such as the California Public Employees’ Retirement System and T. Rowe Price, have also fallen victim to the breach through their association with Pension Benefit Information. Additionally, U.S. government contractor Maximus experienced a breach that compromised the records of 8 to 11 million individuals.

The Modus Operandi of cl0p

Cl0p, the cybercriminal group responsible for the MOVEit breach, launched their hacking campaign on May 27, as revealed by insiders familiar with Progress Software’s investigation. Progress Software first became aware of the compromise the following day when a customer reported anomalous activity. On May 30, the company issued a warning, followed by a partial repair, or patch, on the next day to mitigate the hackers’ campaign.

While many organizations were able to implement the patch and protect themselves, not all were as fortunate. Nathan Little, from Tetra Defense, estimates that the breach likely impacted thousands of companies. The exact number may never be known due to the complex and convoluted nature of the breach.

Ongoing Threat and Escalating Aggression

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Despite efforts to contain the breach, cl0p has continued to escalate its attacks and increase public exposure of the stolen data. The cybercriminal group has adopted an increasingly aggressive approach, seeking to release the compromised information into the public domain. Marc Bleicher, the chief technology officer of Surefire Cyber, warns that we are only in the early stages of understanding the full impact and fallout of the breach. As the stolen data begins to gradually leak, its presence on the underground market will likely grow, exacerbating the repercussions of the breach.

Lessons Learned and Interdependence

The MOVEit breach serves as a stark reminder of the interdependence of organizations when it comes to digital defenses. Christopher Budd, a cybersecurity expert at Sophos, emphasizes the importance of recognizing the interconnectedness of organizations and their reliance on each other’s security measures. In an increasingly digital and interconnected world, a vulnerability in a seemingly mundane software program can have widespread implications.

As organizations navigate the fallout from this breach, it is crucial to reassess their security measures and strengthen their defenses against cyber threats. The MOVEit breach serves as a wake-up call for businesses and institutions worldwide, highlighting the need for robust cybersecurity practices and proactive measures to mitigate the risks associated with interconnected systems.


The MOVEit breach, originating from Progress Software’s file management program, has unleashed a wave of cyberattacks affecting hundreds of organizations and compromising the data of millions of individuals. The wide-ranging impact of this breach underscores the interconnectedness of organizations and the potential for a single software flaw to trigger a global privacy disaster. As cybercriminals become increasingly aggressive and data leaks continue, the fallout from this breach is expected to grow. Organizations must recognize the interdependencies of their digital defenses and prioritize cybersecurity practices to protect sensitive data and mitigate the risks of future breaches.

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Q: What is MOVEit Transfer?

MOVEit Transfer is a file management program developed by Progress Software. It is widely used by organizations to securely transmit large amounts of sensitive data.

Q: Who is cl0p?

Cl0p is a cybercriminal group responsible for the MOVEit breach. They have orchestrated a widespread hacking campaign that has compromised the data of numerous organizations and affected millions of individuals.

Q: How many organizations have been affected by the MOVEit breach?

Approximately 600 organizations worldwide have been affected by the MOVEit breach, according to cyber analysts. The breach has impacted a diverse range of industries, including education, government, and pension management.

Q: How many individuals have been affected by the breach?

Nearly 40 million individuals have been affected by the MOVEit breach, as estimated by cybersecurity firms. The breach has exposed sensitive information, including social security numbers, medical records, and billing data.

Q: What can organizations do to protect themselves from similar breaches?

Organizations should prioritize cybersecurity practices and implement robust security measures to protect against cyber threats. This includes regular vulnerability assessments, employee training on security best practices, and the use of advanced security technologies.

Q: What is the significance of the MOVEit breach in the cybersecurity landscape?

The MOVEit breach highlights the interconnectedness of organizations and the potential for a single software flaw to have far-reaching consequences. It underscores the importance of proactive cybersecurity measures and the need for organizations to reassess their digital defenses in an increasingly interconnected world.


First reported on Reuters

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