In sentencing former Credit Suisse securities dealer Eric Butler to five years in prison, Eastern District Judge Jack B. Weinstein has condemned “the pernicious and pervasive culture of corruption” on Wall Street.

“The blame for this condition is shared not only by individual defendants like Butler, but also by the institutions that employ them, those who carelessly invest, and those who fail to regulate,” Judge Weinstein wrote in the Statement of Reasons for the sentencing he issued on Friday in United States v. Butler, 08-cr-370.