...+ U.S.-based network performance software solutions provider Riverbed Parent Inc.'s operating performance in fiscal year 2018 was significantly weaker than anticipated due to sharp declines in revenues in the back half of 2018 and margin erosion from decreased operating leverage and restructuring costs, resulting in debt leverage around 10x. + We have revised our assessment of the firm's business risk profile to weak, from fair, because we believe that accelerating ##-WAN adoption trends and Riverbed's slow entrance into this highly competitive market increases the uncertainty that it can retain the customer base and market positions it enjoyed with legacy WAN optimization products, and also restore profitability to historical levels. + We lowered our issuer credit rating on Riverbed to 'B-' and the issue-level ratings on its first-lien credit facility to 'B-' and on the senior unsecured notes to '###'. We revised the recovery rating on the first-lien credit facility to '3', from '2'. +...