The data breach that affected lawmakers from across Germany's political spectrum was the latest in a string of prominent cyberattacks around the world. DW looks at five others that have made headlines.
1999: 15-year-old hacks NASA and US Department of Defense
During the attack against the Department's Defense Threat Reduction Agency, an office tasked with countering nuclear, biological and chemical weapons threats, he stole usernames and passwords and more than 3,000 emails.
Because he committed the crimes as a minor, he was sentenced to juvenile detention for six months. James committed suicide in 2008 after the US Secret Service accused him of involvement in a separate cyberattack.
North Korea denied responsibility, but described the attack as a "righteous deed" in response to Sony's film "The Interview," a comedy that depicts the violent death of North Korea's Kim Jong Un.
The US Justice Department eventually charged North Korean Park Jin Hyok in September 2018 for being behind the hack. The FBI said Park had worked with a company that operated as a front for the North Korean government.
2015: Ukraine power grid hack
Some 230,000 people were left in the dark for up to six hours in December 2015 after hackers infiltrated three energy companies and shut down power generation temporarily in three regions of Ukraine.
Ukraine's security service blamed the Russian government for the attack. Without naming the Russian government, some private US security companies that investigated the hack said they believed it had originated in Russia.
The attack is believed to be the first time hackers were able to successfully attack an electricity distribution network.
Cyber crime in Ukraine
2016: Russians allegedly hack US Democrats
Hackers leaked thousands of emails from the Democratic National Committee (DNC), the Democratic Party's governing board, during the 2016 presidential election. The leak embarrassed the party's leadership, who expressed disdain in some emails for the campaign of Bernie Sanders, a candidate who had competed with Hillary Clinton to become the party's presidential nominee.
The attack affected hospitals, including many belonging to the United Kingdom's National Health Service (NHS), banks and other companies. Shipping company FedEx said it had lost hundreds of millions of dollars as a result of the attack.
The United States and United Kingdom blamed North Korea, an accusation the North denied as a "grave political provocation."
Financial information, ID cards and private chats were among the data that the hackers later released online. Merkel's fax number, email address and several of her letters were also reportedly published.
The government has not yet named any suspects or a motivation for the attack.