In the wake of the cowardly terrorist attacks in Paris, many politicians, intelligence officials and pundits are predictably calling for a return to discredited policies of the past that would weaken Americans’ security, violate their privacy and do little or nothing to protect us from terrorists.

I am standing up against these dangerous proposals to ensure we act based on the facts, not fear, in the days ahead.

Some are calling for the United States to weaken Americans’ cybersecurity by undermining strong encryption with backdoors for the government. But security experts have shown again and again that weakening encryption will make it easier for foreign hackers, criminals and spies to break into Americans’ bank accounts, health records and phones, without preventing terrorists from “going dark.”

Last year, I introduced the Secure Data Act to ban government-mandated backdoors into Americans technology. Strong encryption and sound computer security is the best way to keep Americans’ data safe from hackers and foreign threats.

What experts are saying:

Others have argued for expanding mass surveillance of Americans’ phone calls or online activity. But there is no evidence that the mass surveillance of Americans has ever stopped a terrorist attack: