It would appear from these two articles published earlier today that no, you really can't.
Bravado Group and several other MAJOR crypto-influencers caught planing massive pump and dump schemes
Part II: CryptoMedication's response to Bravado
For a primer on how a pump and dump works, I currently know of no better source than Wolong's manifesto republished (most likely without permission) right here on Steemit.