Google has revealed that Iranian hackers targeted both the Trump and Biden-Harris campaigns in May and June this year, as part of a broader email phishing operation that is ongoing. This revelation lends credibility to the Trump campaign's claim on Saturday that they had been hacked as part of an Iranian campaign aimed at interfering with the election.

According to Google's Threat Analysis Group, which monitors government-backed cyberattacks, the hacking unit linked to the Islamic Revolutionary Guard Corps was responsible for this "small but steady" phishing operation. The targets included personal email accounts of approximately a dozen individuals associated with President Biden and former President Trump, including current and former U.S. government officials and individuals connected to their respective campaigns. Google reported blocking numerous attempts to gain unauthorized access to these targets' personal email addresses.

In July, Google disclosed that at least one high-profile political consultant's Gmail account was successfully accessed by the Revolutionary Guard hackers. The company took immediate action to secure the account and referred the matter to law enforcement. However, Google did not disclose the identity of the consultant or whether they were affiliated with either campaign.

The Revolutionary Guard hackers are known for their relentless determination, and Google continues to observe unsuccessful attempts to breach accounts associated with Vice President Kamala Harris, President Biden, and former President Trump. The attempted hacks are part of a wider campaign targeting U.S. and Israeli entities, utilizing Google products such as Sites, Drive, and Gmail.

Last week, Microsoft reported a separate incident involving Revolutionary Guard-affiliated hackers who successfully breached the email account of a former senior adviser to a presidential campaign. However, Microsoft did not provide further details about the specific individual or campaign affected.

Iran has not yet responded to Google's findings or Microsoft's previous report. An Iranian representative had previously denied any involvement in hacking Trump's campaign.

Over the weekend, three U.S. news outlets - Politico, The Washington Post, and The New York Times - received emails containing what appeared to be Trump campaign files, suggesting a "hack-and-leak" operation aimed at embarrassing Trump. The FBI announced on Monday that they were investigating attempts to hack both the Trump and Biden-Harris campaigns but did not provide further details.

While no major cybersecurity company or government agency has confirmed that Iran successfully hacked the Trump campaign, Microsoft has refrained from commenting further on its report, citing its policy not to disclose details about hacking victims unless explicitly requested by them.

The ongoing developments come after a warning from a U.S. intelligence official from the Foreign Malign Influence Center, which is responsible for countering foreign propaganda campaigns, stating that Iran is likely to continue attempts to denigrate President Trump.