Iranian bots and trolls are subtler than Russia's, according to researchers at the Atlantic Council.

Operations from Iran, Malaysia and Vietnam also were identified by the social media company's researchers.

One Twitter hashtag was mentioned 95,000 times in three days, after receiving zero attention in the prior month.

The Russian-linked actors are trying to spread fake tweets tied to Marco Rubio and UK government officials.

The Atlantic Council is organizing a series of events and listening sessions next month where security experts can advise lawmakers on how to stifle influence efforts.

The Russian national took a keen interest in a D.C.-based organization's cybersecurity vulnerabilities soon after the group was hit by phishing attempts last year.