Google will acknowledge that it has made “mistakes” on privacy issues in testimony an executive of the Alphabet Inc. unit will deliver to a US Senate committee Wednesday, according to a document reviewed by Reuters.

“We acknowledge that we have made mistakes in the past, from which we have learned, and improved our robust privacy program,” Google chief privacy officer Keith Enright will say in written testimony before the Senate Commerce Committee. Google will testify alongside AT&T, Amazon, Apple and other companies amid growing concerns about data privacy.

Google’s written testimony did not identify specific prior mistakes, but the company has come under fire over privacy issues.

In 2012, Google agreed to pay a then-record $22.5 million civil penalty to settle Federal Trade Commission charges that it misrepresented to Apple Safari Internet browser users that it would not place tracking “cookies” or serve them targeted ads.

A year earlier, Google agreed to an FTC privacy settlement and regular privacy audits for 20 years after the government charged it used deceptive tactics and violating consumer privacy promises when it launched its social network, Google Buzz.

In August, Alphabet was sued and accused of illegally tracking movements of millions of iPhone and Android phone users even when they use a privacy setting to prevent it.

The US Commerce Department said it was seeking comments on how to set nationwide data privacy rules in the wake of tough new requirements adopted by the European Union and California.

Also, the Justice Department said it held a “listening session” with state attorneys general on how the government can safeguard consumers online.

Andrew DeVore, an Amazon vice president, will tell the committee that new European privacy rules “required us to divert significant resources to administrative and record-keeping tasks and away from inventing new features for customers.”

Twitter data protection officer Damien Kieran will urge development of “a robust privacy framework that protects individuals’ rights … while preserving the freedom to innovate.”