ricesteban wrote:
Someone who has access to my computer password installed eblaster on my computer. He promised me he removed it from my computer, but how can I be certain of this?
Welcome to Apple's discussion groups.
Do a Web search for "eblaster mac removal" (without the quotes). You should find some advice in the results. In the mean time I wouldn't do anything sensitive (such as online banking) until you can be sure it's gone. If that "someone" isn't your parent, boss, or your company's IP support person, then they (a) owe you a compelling reason why they did that and (b) should no longer have access to your computer password.