New to bitcoin.

Has this community or you (individual) ever been the victim of a clever attacker?
Has anybody exploited a weakness in your system?
If so, id like to hear your experience & the security practices you implement today.

From modding timestamps & using custom clients for double spend attacks,
to DNS hijacks, keyloggers, botnets & malware. Have any of you ran into savvy users throughout your
bitcoin experience, or better yet have any of you caught them in the act?

Whats your method of security to keep your BTC safe?
Is there any physical measures you can take?
Cold storage?

(Note i am not talking about scammers or basic human error, Im talking about a situation where you were "outguned" with skill & knowledge of computer science)



Curious & interested

- Fresh lettuce

New to bitcoin.
Atm opened up in my area, can finally buy & sell bitcoins for cash with ease.
Have $5,000 USD to invest.
I pay 11.16 (cents)/kWh
Must be indoors, will be putting in a 15 x 10 room with one window. Will be next to my office.

Need a straight up ball park estimate in USD.

What would you buy, how much would you say I could make monthly? (Rough estimate)


Any Ideas?


- Fresh lettuce