The IRS breach revealed last week will be Topic No. 1 at a hearing today before the U.S. Senate Finance Committee. IRS officials are expected to place the blame for the data leak on lawmaker-driven cutbacks in funding. The agency also lost key IT personnel when it was stripped of its ability to pay cybersecurity experts at higher-than-normal levels. IRS spending on cybersecurity is down by 20% since 2011, from $187 million four years ago to $149 million in the current fiscal year.”]