Russia' meddling will likely focus on France, Germany and Italy in an effort to secure as many parliamentary seats for pro-Kremlin candidates as possible, Estonia's foreign intelligence agency said.

Typical messages examined during the timeframe in question included posts criticizing credible media outlets, accusations that immigrants were killing house pets, and graphic images of violent protests.

The social media giant says it shut down dozens of accounts, pages and groups intended to "engage in hate speech and spread divisive comments on both sides of the political debate" in the United Kingdom and in Romania.

The approach is an attempt to solve a problem that keeps changing.

Some users spreading disinformation were government empoloyees, Facebook said.

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.