In a veiled attack on Mr Sibal who was in the forefront of the move by opposition legislators to impeach the Chief Justice of India, senior advocate Rakesh Dwivedi, representing Unique Identification Authority of India (UIDAI), said the Congress leader was part of the Empowered Group of Minister (EGoM) that had dealt with the Aadhaar scheme.
He said now the same person, who was once advocating the Aadhaar scheme, was making a submission that data would be compromised with private players.
"Mr Sibal argued that the government is collecting data and would give them to private players," Mr Dwivedi took a dig at Mr Sibal while making his submission before a five judge constitution bench headed by Chief Justice Dipak Misra.
"The (Aadhaar) policy had the support of two successive governments," he told the bench which also comprised Justices AK Sikri, AM Khanwilkar, DY Chandrachud and Ashok Bhushan.
Mr Sibal, who had appeared for some petitioners opposed to the Aadhaar scheme, was not present in the courtroom. He recently said he would not be appearing before the Chief Justice of India as he was a signatory to the impeachment notice.
Earlier, Mr Sibal had opposed the Aadhaar scheme and said "our identity cannot be confined to mere Aadhaar numbers, we are all much more...I am against the this one-nation-one-identity move."
The top court is hearing a clutch of petitions challenging Aadhaar and its enabling 2016 law.