they'd need a warrant to do almost anything internet related, be it to check with your isp to see what you've been doing and start tracking your every move, or to check with fb, ebay, amazon etc..... they'd need a warrant so they can fish for a warrant, which no judge will grant unless you are a suspected drug lord. a 6 plant properly done with warrant, dea, etc bust is embarrassing to the cops if it makes it to the news.waste of taxes.
ever heard of internet piracy.... why arent even 15% of internet pirates "caught".
c'mon guys, put your brains into some real world thinking scenarios and quit with this nonsensical paranoia. cops wont be a problem as long as the cops don't get neighbor complaints or find it accidentally (ie cop sees "grow lights during night, several hours left on, gets suspicious. asks to search house or come back with warrant" or "cop is at house for some reason, be it some traffic incident, vandalism, sex offender moved in down the block, etc. cop smells marijuana." then he can legally search without a warrant.)
op if you have paranoia not relaxation from growing, its obviously not for you (probably because you seem to be thinking mostly along the lines that the expensive lights, nutes, etc will automatically fix all your inevitable mistakes caused by only knowing 1/10th of what you should before you spend $500...., i say you need to read some. i mean who gets this tripped on a grow thats supposedly personal unless they are truly ignorant of reality)