TheStreet's founder and Action Alerts Plus portfolio manager Jim Cramer said Toshiba's (TOSBF)  agreement to sell its chip unit to Bain-Apple (AAPL - Get Report) is bad news for Western Digital (WDC - Get Report) .  Cramer said securing the deal to buy Toshiba would have been extremely beneficial for Western Digital as many of the tech trends coming to dominate the market require great flash. 

"I would be very careful with Western Digital," Cramer said. "The group is treacherous." 

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