We knew it was coming after we saw PDFs used as a jailbreak vehicle earlier this week, now it has begun: a German government agency has issued an official warning of potential security problems with iOS devices.The Federal Office for Information Security said on Wednesday that the OS has ‘two critical weak points for which no patch exists.’ Naturally, this includes opening a manipulated website or PDF file, which could let criminals grab your passwords and emails. While no attacks have been observed yet, the government warns they must be expected. Users are advised to avoid opening PDFs and not to visit websites they don’t trust. iPhones using iOS versions 3.1.2-4.0.1., iPads using iOS 3.2-3.2.1 and iPod touch devices using iOS 3.1.2.-4.0 are affected, the FOIS warns. As Seth Weintraub notes, “Your iOS device is insecure in such a big and obvious way right now. You should be extremely careful of what sites you visit.”