Hackers have broken into the network of Lockheed Martin and several other US military contractors, according to media reports. Lockheed Martin has described the attack as significant and tenacious In response to the attack the firm is said to have promptly blocked all remote VPN access to their internal network, and informed over 100,000 users that they would have to change their passwords. In addition, its claimed that all Lockheed personnel with RSA SecurID tokens will be given new tokens.”]