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US charges 17 defendants in Iran-linked hacking case over HBO ransom

The US indicts 17 defendants in a hacking case linked to Iran's IRGC, highlighting the 2017 HBO ransom plot involving Bitcoin.

18 September 2026 · 4 min read
US charges 17 defendants in Iran-linked hacking case over HBO ransom

Expanding the charges against Iranian cyber criminals

The US Department of Justice (DOJ) has expanded its indictment in a high-profile hacking case tied to Iran's cryptocurrency-insurance-scheme-in-strait-of-hormuz/">Islamic Revolutionary Guard Corps (IRGC). This update brings the total number of defendants to 17, with several linked to a notable breach of HBO that involved a ransomware plot demanding almost $6 million in Bitcoin. The case originally surfaced in 2018, when the DOJ first charged nine individuals associated with the Mabna Institute. This Iranian group allegedly has ties to a broad spectrum of cyber intrusions aiming to target universities, government institutions, and private sector entities. The newly issued indictment, made public on August 18, includes a 14-count superseding indictment that details the alleged activities of the cyber criminals over the years. One major aspect of this case is the brazen HBO hack that occurred in 2017. Prosecutors assert that the breach exposed unreleased television content, including scripts and other proprietary data. The hackers demanded a ransom that initially stood at $5.5 million; however, it reportedly climbed to around $6 million before the stolen content was published online. Notably, the DOJ has stated that there is no evidence indicating that HBO complied with the ransom demands. By targeting prestigious institutions and high-profile companies, the Mabna Institute demonstrated a sophisticated understanding of cyber operations that extended beyond financial gains.

The broader implications of the indictment

The repercussions of the indictment stretch far beyond the HBO breach. Prosecutors allege that the Mabna Institute was involved in cyber attacks that compromised over 100,000 professor accounts, successfully infiltrating about 8,000 and pilfering a staggering 31.5 terabytes of sensitive academic data. This relentless cyber campaign reportedly continued until December 2017, causing millions in remediation costs for affected organizations. The operations allegedly conducted by the Mabna group extend into various sectors, combining elements of corporate espionage and political hacking. The DOJ claims that the group's activities inflicted more than $20 million in investigation and recovery expenses upon private sector and governmental entities combined. Such claims highlight the severity of the cyber threats faced not only in the United States but also on a global scale. With the indictment emphasizing direct ties between the HBO incident and broader cyber operations, US authorities aim to highlight the intricate web of Iranian cyber crime extending back several years. This joint effort between federal agencies underscores the need for robust cybersecurity measures.

Rewards for information about the key defendants

In connection with its expanded indictment, the US State Department's Rewards for Justice program has placed significant bounties on the heads of several defendants, offering up to $10 million for any information that leads to the location of prominent figures such as Behzad Mesri, Arman Kahzadian, Keyvan Fayaz, and Saber Shahbazi Ballojeh. These monetary rewards indicate the seriousness with which US officials are treating this case, seeking to dismantle an intricate network of cybercriminals who operate with state-sponsored backing. The stakes are high, as information regarding these individuals could help thwart future cyber attacks linked to Iran. Such actions also spotlight ongoing diplomatic tensions between the United States and Iran, particularly concerning cyber activities attributed to state-sponsored entities. Iran has previously denied these allegations, stressing their commitment to counter cyber threats targeting their national interests.

The road ahead for cyber security

The expanded charges against the Mabna Institute-affiliated defendants reflect an ongoing challenge for global cybersecurity. While the Iranian state has been accused of orchestrating cyber intrusions focusing on sensitive data theft, it is clear that these activities pose severe risks to educational institutions and government networks alike. The vulnerabilities exhibited by these organizations continue to raise critical concerns about cybersecurity protocols and response mechanisms in place. As cyber threats evolve, entities around the world must foster stronger defense mechanisms. This indictment serves as a warning — complacency could lead to significant operational disruptions, financial losses, and compromises of sensitive information across various sectors. As intelligence agencies continue to monitor cyber activities stemming from state-sponsored actors, collaboration between nations and a focus on enhanced cybersecurity policies will be crucial in mitigating further risks posed by groups like the Mabna Institute. The ongoing situation is a reminder of the potential financial repercussions of cyber crime, particularly as demands shift toward cryptocurrencies like Bitcoin, which offer anonymity for illicit activities. The expansion of charges serves to underscore the importance of remaining vigilant against such threats in a landscape defined by rapid technological advancements.