An anonymous reader writes "After years on the defensive, governments are building their own offensive capabilities to deliver digital attacks against their enemies. It's all part of a secret arms race, where countries spend billions of dollars to create stockpiles of digital weapons and zero-day flaws. But is this making us any safer, or putting us and the internet at risk? 'Estonia is a small state with a population of just 1.3 million. However, it has a highly-developed online infrastructure, having invested heavily in e-government services, digital ID cards, and online banking. ... The attacks on Estonia were a turning point, proving that a digital bombardment could be used not just to derail a company or a website, but to attack a country. Since then, many nations have been scrambling to improve their digital defenses -- and their digital weapons. While the attacks on Estonia used relatively simple tools against a small target, bigger weapons are being built to take on some of the mightiest of targets.'"