Mikael Pentikäinen, Editor-in-chief of the newspaper Helsingin Sanomat, posted on Twitter that the attacks seem to be coming from somewhere in Eastern Europe, but the investigation is still ongoing.
The Helsingin Sanomat website was down for a time on Tuesday afternoon, but came back online soon after. Pentikäinen warned of possible loading delays due to the attack.
ICT Agency HALTIK, which provides technical data services for the police and the Border Guard websites, says that the similarly-timed problems with those pages did not result from an attack. Rather, the trouble was caused by a technical failure that is currently being repaired, the agency says.
Regulator: DDoS attacks on Finland rare
The Finnish Communications Regulatory Authority confirmed that several Finnish websites had come under a deliberate denial of service attack. Sanoma’s web services were the target of the attack, according to the authority’s data security expert Jussi Eronen.
Some webpages were down for several hours on Tuesday. Although the attack did come from outside Finland, the authority did not want to comment on who might be behind it.
Eronen added that large-scale attacks on Finnish websites are comparatively rare, with the last large-scale attack coming several years ago.