When Congress voted to overturn online privacy rules last week, Steve Wilmot, a Los Angeles songwriter, reacted like many worried consumers: He looked into signing up for a technology service known as a virtual private network, or VPN...

The online privacy rules, which were set to go into effect this year and which President Trump fully repealed on Monday, would have required broadband providers like Comcast and Charter to get permission from customers before selling their browsing history to advertisers. Without restrictions, the companies can track and sell people’s information with greater ease...

A VPN was a natural service to consider in response. That’s because the technology creates a virtual tunnel that shields your browsing information from your internet service provider. So Mr. Wilmot researched VPNs in hopes of protecting his own browsing data.

“I don’t really want anybody to have any sort of access to what I’m looking at,” he said. “If anyone is going to profit off my privacy, I’d prefer it to be me.”

But while, VPNs are worth considering, they are an incomplete and flawed solution. For one thing, they often slow down internet speeds significantly. Some apps and services may also stop working properly when you are connected to a virtual network..