The Tech Transparency Project (TTP) discovered that X had, among other things, given blue checkmarks to accounts connected to Hezbollah members.
A tick gives you access to longer postings and better promotion for $8 (£6.40) a month.
Following the report, X said that its security was “robust” and deleted a few ticks.
One of the most contentious decisions Mr. Musk made after purchasing Twitter in 2022 was to charge for checkmarks. Opponents claimed the action would exacerbate the spread of false information and let impersonators to use the network.
Previously available for free, the badge denoted that the social media network had confirmed the identity behind it.
Along with celebrities and world leaders, journalists made up a large portion of the honorees.
Some of the cases involved individuals who were subject to US sanctions, which prompted charges that the corporation was violating US sanctions law and criticizing it for providing a platform to the wrong people.
However, the Tech Transparency Project stated that “X may be raising new legal issues” now that the system has been paid for.
It stated that following the publication of its research, X has taken the ticks off the accounts it had discovered.
The TTP said that the Houthis, an organization controlled by Ansar Allah, had also appeared to have paid for their blue check mark. The checkmark is no longer present. The account has almost 23,00 followers..