Dear brothers Muftis,
الجواب وبالله التوفيق
As per our knowledge, the social security amount paid to individuals is a return of the money which was previously deducted as taxes from their salary or is a way of the government supporting its citizens and residents.
If however you have absolute confirmation of it being pure interest or money contaminated by interest then you should not take that money.
واللہ اعلم بالصواب