The threat of foreign adversaries such as Russia trying to influence U.S. politicians, campaigns and the public ¡°continues to grow,¡± with elections presenting an especially attractive target, Deputy Attorney General Rod Rosenstein said.

¡°Influence operations are a form of information warfare,¡± Rosenstein said in prepared remarks for a speech Thursday at the Aspen Security Forum in Colorado. ¡°Covert propaganda and disinformation are among the primary weapons.¡±

Elections, in particular, provide ¡°an attractive opportunity for foreign influence campaigns to undermine our political processes,¡± Rosenstein said. The deputy attorney general cited comments by Director of National Intelligence Dan Coats, who said last week that ¡°the digital infrastructure that serves this country is literally under attack.¡±

Rosenstein¡¯s comments came as the Justice Department released a 156-page report describing the department¡¯s plans to respond to cybersecurity threats and, in particular, malign foreign influence operations. The report identifies five categories of malicious influence operations, including hacking attacks on election infrastructure; covert and overt operations to harm or assist political organizations; and activities to manipulate public opinion or sow divisions.

The report also says the Justice Department should consider ¡°whether legislation to address encryption (and all related service provider access) challenges should be pursued.¡± That appears to be a reference to law enforcement efforts to get companies including Apple Inc. to provide access to locked mobile phones.

The report from the department¡¯s Cyber-Digital Task Force is meant to serve as a framework that establishes principles for how to respond to an attack like the one launched by Russia during the 2016 U.S. election, Rosenstein said.

¡°The Russian effort to influence the 2016 presidential election is just one tree in a growing forest,¡± Rosenstein said. ¡°Focusing merely on a single election misses the point.¡± He added that ¡°modern technology vastly expands the speed and effectiveness of disinformation campaigns.¡±

¡°The internet and social media platforms allow foreign agents to spread misleading political messages while masquerading as Americans,¡± he said, adding that there is also a threat from government-controlled media outlets and paid lobbyists.

¡°People should be aware when lobbyists or media outlets are working for a foreign government so they can evaluate the source¡¯s credibility,¡± the deputy attorney general said. ¡°Particularly when respected figures argue in favor of foreign interests, it may matter to know that they are taking guidance from a foreign nation.¡±