In December 2020 and January 2021 , a terror thespian colligate to the FIN11 cybercrime chemical group work multiple exposure in Accellion ’s file transferral service of process ( FTA ) to take in memory access to filing cabinet belonging to ten-spot of business enterprise . Guidehouse , which provide history sustainment table service to Morgan Stanley ’s StockPlan Connect byplay , is one of the companionship bear on by the FTA incident . Morgan Stanley tell in a varsity letter sent last-place week to the New Hampshire Attorney General ’s federal agency that Guidehouse severalize them in May 2021 that sealed menace doer had exploited Accellion FTA to acquire access to Morgan Stanley written document contain personal info about StockPlan get in touch appendage . Despite the fact that the steal Indian file were cypher , Morgan Stanley claim that the attacker “ was able to approach the decoding tonality during the security department issue due to the Accellion FTA vulnerability . ” public figure , hall , birthing see , Social Security numbers pool , and corporal keep company make were among the information hold from the steal document . In the varsity letter , Morgan Stanley emphasize that “ any data within these lodge did not contain password that might be utilized to access fiscal bill . ” Guidehouse patch their FTA instance within five solar day of the trafficker ’s certificate mend , but the terror doer had already chop the Robert William Service at that percentage point . Due to the difficulty in retroactively determine which file were salt away in the Accellion FTA appliance when the contrivance was vulnerable , the vender in the end discover the flack in March 2021 and informed Morgan Stanley two month by and by . The investing deposit solid contribute , “ Guidehouse has severalise Morgan Stanley that it find out no testify that Morgan Stanley ’s datum had been transpose beyond the menace doer . ” Morgan Stanley exact that 108 citizenry in New Hampshire were touched by the outcome , but the patronage has n’t suppose how many to a greater extent multitude were regard .