Depends on where you are conducting that activity. A big no-no is if you are using your current employer's infrastructure to job hunt(or any other personal acti

Depends on where you are conducting that activity. A big no-no is if you are using your current employer's infrastructure to job hunt(or any other personal activity, including personal projects) i.e. if you are using office premises, computers, printers, phones etc for you job hunting expeditions. What I despise though, and personally experienced, is when HR of present employer use external recruitment agencies to spy on you and block your job hunt. And use that information to discriminate against you in various ways.