"We can confirm right now that according to the information we have, no company or institution in Estonia has fallen victim [to such an attack]," RIA spokesperson Helen Uldrich told BNS. "There is no information at the moment about a possible new global attack either, but that information may change."

Early on Monday, European governments and companies appeared to have avoided further fallout from a crippling global cyber attack in which attackers used malicious software to hit the U.K.'s National Health Service, some of Spain's largest companies, including Telefonica, as well as computers across Russia, Ukraine and Taiwan, leading to computers and data being locked up and held for ransom.

The European Union Agency for Law Enforcement Cooperation (Europol) announced that more than 200,000 computers around the world had been affected over the weekend in what it described as an "unprecedented attack."

"The number of victims appears not to have gone up and so far, the situation seems stable in Europe, which is a success,"

The police agency Europol said more than 200,000 computers around the world had been affected over the weekend in what it said was "an unprecedented attack." Europol senior spokesperson Jan Op Gen Oorth told AFP.