Crude and trollish, the efforts nevertheless show continued willingness of nation-states to meddle in U.S. elections.

China has increased its aggressive actions and rhetoric around politics, other divisive issues, researchers say.

The Iranian cyberespionage group known as APT 42 is characterized by targeted spear phishing campaigns and extensive surveillance operations.

A group called "Homeland Justice," which the Albanian government said is a front for Iranian hackers, took responsibility for the cyberattacks.

The hackers linked to the Iranian government claimed to have attacked Albania for hosting an opposition group conference.

More than 70 bogus sites in North America, Europe, the Middle East and Asia are part of an information operation pushing pro-Beijing messages.

One attack appears to have shut down the president of Taiwan's website Tuesday before Nancy Pelosi's historic visit.

KillNet, the group that claimed responsibility, has launched a series of attacks around the world on perceived enemies of Russia.

The ransomware has previously received little public scrutiny.