Russian, Chinese, and Iranian hackers have all been conducting cyberattacks targeting people and organizations associated with the Trump and Biden campaigns and other organizations affiliated with the upcoming 2020 presidential election, according to a new report.

Microsoft named the three foreign Advanced Persistent Threat hacker groups in a Thursday blog post as Strontium, or APT28, from Russia, Zirconium from China, and Phosphorous from Iran, noting that “the activity we are announcing today makes clear that foreign activity groups have stepped up their efforts targeting the 2020 election as had been anticipated.” Microsoft, which said it directly notified those targeted, stressed that “what we’ve seen is consistent with previous attack patterns that not only target candidates and campaign staffers but also those they consult on key issues.”