'Warrant canaries': a subtle hint that your email provider is compromised

The business of protecting data is getting tougher by the day - but there are ways not to breach the law and still safeguard customer data

Since the Snowden revelations, the market for privacy-oriented services has only grown - indeed, it's likely that it will keep growing. We're not at peak surveillance, but we're way past peak indifference to surveillance.

Running a privacy service comes with two distinct technical challenges: the cryptographic challenge of making messages secure in transit and at rest on your server; and the legal challenge of keeping your promises to your customers intact when a government wants to spy on them.