Delivering a secure product should be one of the main concerns for any and all IT specialists, whether they are developers writing a web application, architects designing a new network or admins configuring a server. Although most IT professionals try to do their best in this regard, there is – and probably always will be – a lot of IT systems and applications where security is not taken into consideration at all. Sometimes the ignorance of security issues may have no consequences at all, but sometimes it can have far reaching consequences. In this talk we will take a look at couple of instances where lack of very simple security and safety measures in application code, configuration of servers, etc. led to some rather spectacular results or at least had funny and/or interesting consequences. Some of these instances are well known and you may have heard of them, some of them were discovered by ALEF CSIRT only this year and will be new to you, but all are worth taking a look at and a good reminder of why we should care about security.