“With New Firepower, S.E.C. Tracks Bigger Game,”  Ben Protess and Azam Ahmed  report at the New York Times Dealbook. Embarrassed after missing the warning signs of the financial crisis and the Ponzi scheme of Bernard L. Madoff, the agency’s enforcement division has adopted several new — if somewhat unconventional — strategies to restore its credibility. The S.E.C. is taking its cue from criminal authorities, studying statistical formulas to trace connections, creating a powerful unit to cull tips and assign cases and even striking a deal with the Federal Bureau of Investigation to have agents embedded with the regulator. In one of the agency’s first efforts,…