When you get an EA ... ask or look for its strategy ... without knowing what your EA does in different conditions is suicidal. Test its strategy ... for instance, an EA could have been very useful and lucrative a few months ago but after the market behavior change every semester ... it could have become fatal for your account balance ... so only attach an EA to your account if you are confident of the strategy that it is using and the data that it applies. Some EAs are also programmed to calculate money management rules so you should also look into that too. EAs are best used when your accounts are hosted on VPNs. (Virtual Private Networks).