The website belonging to the Public and Commercial Services Union has been disrupted by a series of Distributed Denial of Service attacks.
The PCS was inaccessible to most visitors, with some claiming that it was running excruciatingly slowly.
The PCS said on its website that it was under a DDoS attack and was working with its web development company to resolve the issue as soon as possible. It also said that its members' personal data was not compromised during the attack.
The organisation confirmed that its website was receiving ‘false’ traffic that had made it unavailable to most of its visitors.
“Following ongoing investigations, we can now confirm that these problems have been caused by a substantial denial-of-service (DoS) attack against the website. It is important to note that this has had no effect on the security of the information we hold, such as membership data,” the PCS said in the statement.
The organisation will be holding its annual conference in Brighton soon, and members will decide whether to protest against the government's public spending cuts. If the vote is positive, then the organisation will join other public unions including the National Union of Teachers to hold a nation wide strike on June 10 to protest the budget cuts.