J2 Global, parent company of popular tech sites PCMag and Mashable, is now the subject of multiple legal investigations following a tit-for-tat exchange with crew of short sellers that temporarily crashed its stock price. On June 30, short selling outfit Hindenburg Research published a report that alleged J2’s “opaque approach” to acquiring companies “opened the door to egregious insider self-enrichment.” The New York-based Hindenburg calculated J2 has acquired 186 businesses in its 25-year history, but its report drew particular attention to one deal: an undisclosed $900,000 paid to a J2 exec for an entity that had no employees or apparent assets.…

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