The basic idea is that investors hype up or «pump up» a certain bitcoin — that is usually an alternative coin that is very cheap but high risk — via investor’s websites, blogs, or even Reddit, according to The Daily Dot. Log in. However, given the unregulated nature of bitcoin itself, the door has been wide open for fraud. Social Security. Recently, a tech support site called Bleeping Computer issued a warning about cryptocurrency-targeting malware in hopes of saving customers from sending cryptocoins via transactions, reported Yahoo Finance.