(Bloomberg) -- It’s not just the Democratic Party learning lessons from cyber attacks linked to Russia during the 2016 U.S. election: hackers, too, are shifting their tactics, according to the co-founder of computer security company CrowdStrike Inc.

Undeterred by tighter sanctions imposed on Russia by the U.S. in response to last year’s attacks, hackers are increasingly likely to leak altered information they steal from both individuals and companies, said Dmitri Alperovitch, who serves as CrowdStrike’s chief technology officer. "I’m sure they’ve been taking notes about how they can try to extort individuals, companies and leverage the same trade craft that’s been used so successfully in the last year," Alperovitch said in an interview Tuesday in San Francisco. "We will see leaks from companies, perhaps political entities, this year and we need to be very careful about believing everything that we see."

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