India’s top IT companies and large employers – TCS and Wipro – had sent out advisories to employees in light of the government’s planned mock drills today in anticipation of possible hostile attacks, people familiar with the developments said. The companies urged employees to comply with the directives of their respective local administrations and not panic. TCS said in an email that administrative and human resources teams at different work locations would provide instructions if anything is to be done differently and that employees should stay…