Major Sameer Ali hacked an Indian Army major’s e-mail account in 2010 and extracted many sensitive documents. Ali has been named by India in the list of 50’most wanted’ terrorists sheltered by Pakistan for involvement in the Mumbai attacks. The news of the hacking was given to Indian probe agencies by the FBI, which was then interrogating Mumbai attack accused David Coleman Headley. The FBI told the CBI Ali had been accessing the Indian Army officer’s rediffmail account from the ISI headquarters.
Source: https://thehackernews.com/2011/05/isi-pakistan-hack-email-account-of.html