Think twice before using words like "bomb", "blast", "kill", "attack" in your emails, blogs, tweets, facebook status or any other social network status updates.

Using such kind of words will put you under a surveillance of Indian security agencies.

"NETRA", is an Internet Spy System, developed by Centre for Artificial Intelligence and Robotics (CAIR), a lab under Defence Research and Development Organization (DRDO), which is capable of detecting mala fide message, reports Times of India.

Besides status update in social networks, the NETRA project is capable of capture any dubious voice traffic passing thorough VOIP services such as Skype or Google Talk.

"When Netra is operationalized, security agencies will get a big handle on monitoring activities of dubious people and organizations which use Internet to carry out their nefarious designs," a government official said.