A Russian-speaking hacking group, known as Killnet, has claimed responsibility for at least some of the hacks, saying they were in retaliation for Lithuania blocking the shipment of certain goods to the Russian enclave of Kaliningrad, which is wedged between Lithuania and Poland.
Monday’s cyberattacks partly targeted Lithuania’s Secure Data Transfer Network, a communications network for government officials designed to withstand war and other crises, according to the Defense Ministry.
“Part of the users of the National Secure Data Transfer Network could not access the services, work is underway to restore it to normal,” Lithuania’s National Cyber Security Center (NKSC) said in a statement. published by the Ministry of Defence.
“It is highly likely that such intense attacks, if not more, will continue in the coming days, especially against the communications, energy and financial sectors,” said NKSC Acting Director Jonas Skardinskas. , in a press release.
The type of hack in question is known as a distributed denial of service attack, which floods websites with bogus traffic to take them offline. It’s a common tool favored by “hacktivists” like Killnet – suspected non-state actors who carry out cyberattacks for political causes.
Since Russia’s full-fledged invasion of Ukraine in February, a host of pro-Ukrainian and pro-Russian hacking groups have disrupted a range of organizations in Ukraine and Russia. A group known as the Belarusian Cyber-Partisans, for example, claimed responsibility for hacking computer systems that support trains moving Russian soldiers near front lines in Ukraine.