Russian intelligence officials who spearheaded the cyberattacks on the 2016 election reportedly targeted Sen. Claire McCaskill, D-Mo., at the beginning of her 2018 re-election campaign.

According to a forensic analysis by the Daily Beast, McCaskill, a Democrat and an outspoken critic of Russia, was targeted by Russia’s GRU intelligence agency in August 2017 through an email phishing technique. It is unclear if the attack was successful.