Last updated: July 2026 · 9 min read

Most guides to online safety focus on protecting your own data. This one is about a different, less-discussed risk: your internet connection or a device on your network being used, without your consent, to carry someone else's traffic — including traffic tied to fraud, credential-stuffing attacks, or worse. This is the business of "residential proxy" networks, and in 2026 both the FBI and independent security researchers have been sounding the alarm on how widespread it's become.

What Is a Residential Proxy Network?

A residential proxy routes internet traffic through the IP address of a real home internet connection — a router, a smart TV box, a phone, or another connected device — rather than through a data-center server. To the websites and services on the other end, the traffic looks like it's coming from an ordinary household, because it is.

There are legitimate residential proxy businesses that pay people to opt in, sharing a slice of their bandwidth for market research or ad verification. The problem the FBI and security researchers are focused on is the illegitimate version: networks built by compromising devices without the owner's knowledge, then reselling access to that traffic route to anyone willing to pay — including scammers, credential thieves, and state-linked hacking groups.

Why Criminals Want Your Home IP Address

Security tools and platforms have learned to distrust traffic from known data-center IP ranges — those are cheap to rent and easy to flag. A residential IP address carries an entirely different reputation: it looks like a real person browsing from a real home, which is exactly what makes it valuable for evading fraud checks, scraping content at scale, testing stolen credentials, or hiding the true origin of an attack.

That value has created a genuine underground market. Research shared around the 2026 RSA Conference found abuse rates of roughly 17% to 28% across some of the largest residential proxy providers, with over 75 million distinct residential proxy exit nodes observed in a single month, according to IPinfo's analysis. Because these IPs rotate constantly — the same research found IPv4 residential proxy addresses stay active for an average of under 8 days, and IPv6 addresses for closer to a single day — they're difficult for defenders to track and block using traditional IP reputation lists alone.

Independent scanning data backs this up: GreyNoise's "Invisible Army" research found that nearly four in ten IP addresses hitting its internet-wide sensors were residential IPs, a sign of how much home internet infrastructure has been pulled into large-scale scanning and attack traffic. Coverage from Help Net Security put it plainly: residential proxy traffic is making purely IP-based reputation defenses far less reliable than they used to be.

How a Device Gets Recruited Without the Owner Knowing

In March 2026, the FBI's Internet Crime Complaint Center (IC3) published a public service announcement titled "Evading Residential Proxy Networks", aimed specifically at helping ordinary people avoid having their own devices turned into unwitting proxies. The PSA describes several common entry points:

• Unbranded or discounted streaming boxes and IoT devices. Some cheap Android streaming boxes and off-brand smart devices ship with malware already installed, quietly running a proxy service or leaving a backdoor for one to be installed later.
• End-of-life and unpatched routers. Older routers that no longer receive security updates are a favorite target. In one documented case, malware known as AVrecon infected home routers and was used to power the "SocksEscort" residential proxy service, which is believed to have compromised and resold access to roughly 369,000 devices since 2020, per FBI reporting.
• "Free" VPN and proxy apps. Some free mobile VPN apps monetize themselves by quietly turning the user's own device into an exit node for other people's traffic — effectively the opposite of what a privacy tool is supposed to do.
• Pirated software and cracked apps. Software from unofficial sources is a common vector for the malware families that install proxy functionality alongside other payloads.

In every case, the device keeps working normally for its owner — that's the point. The proxy operator doesn't want to be noticed, and most victims never realize their connection has been rented out.

Why This Matters for You, Even If You're Not "Hacked" in an Obvious Way

Being part of a residential proxy network without your knowledge carries real, practical downsides:

• Your IP address's reputation suffers. If traffic from your connection is used for fraud or scraping, your IP can end up on abuse or blacklist databases, which can cause emails to be marked as spam or logins to trigger extra verification. Our guide to IP blacklists covers how that happens and how to get an address delisted.
• You could be legally implicated. If law enforcement traces malicious traffic back to an IP address, the first step is usually identifying the connection owner — even if the actual traffic was generated by criminals abusing that connection.
• Your bandwidth and device performance take a hit. Constantly relaying other people's traffic uses your data allowance and can visibly slow down a router or device.
• It's a sign of a broader compromise. A device recruited into a proxy network is, by definition, already compromised — the same malware could be doing other things, from data theft to acting as a stepping stone deeper into your home network.

How to Check If Your Connection Might Be Involved

There's no single definitive test, but a few checks make an unwanted proxy much less likely to go unnoticed:

Check your IP's reputation

If your home IP address has quietly been used for abuse, it's often flagged on public reputation and blacklist databases before you'd notice anything else. Run our IP reputation check to see how your current address is rated, and use the blacklist check to see if it appears on any spam or abuse lists.

Look at what's connected to your network

Unknown or unexpected devices on your home network are worth investigating — an old, unpatched router or a cheap streaming box you don't fully trust is exactly the kind of device the FBI's PSA flags. Our network scan tool can help you see what's active on your network right now.

Update or replace old router firmware

End-of-life routers that no longer receive security patches are a leading entry point for this kind of compromise. Check whether your router model still receives firmware updates from the manufacturer, and if it doesn't, treat replacement as a real security priority rather than an optional upgrade.

Be skeptical of "free" bandwidth-sharing apps

If an app or service offers something for free in exchange for background permissions or "network optimization," read the terms carefully. Some free VPN and ad-blocking apps disclose, deep in their terms of service, that they may route other users' traffic through your connection in exchange for the free tier. If you want a VPN, our VPN comparison focuses on providers with transparent, audited no-logs policies rather than free apps that monetize your bandwidth.

Avoid pirated software and unofficial app stores

Sticking to official app stores and manufacturer firmware sources removes one of the most common ways proxy-enabling malware gets onto a device in the first place.

Frequently Asked Questions

Is using a residential proxy service illegal?

Not inherently — some residential proxy networks are built with genuine, informed consent from participants who are paid to share bandwidth, and businesses use them for legitimate purposes like ad verification and market research. The FBI's concern, and the focus of this article, is networks built by compromising devices without the owner's knowledge or consent, which is a form of unauthorized computer access regardless of what the traffic is later used for.

How would I know if my device is part of one?

There's often no obvious symptom, which is what makes this hard to detect. Warning signs can include unexplained slowdowns, higher-than-usual data usage, an old or unpatched router, or your IP address unexpectedly appearing on a blacklist or reputation flag despite normal browsing habits.

Does a VPN protect me from this?

A reputable, paid VPN with a transparent no-logs policy doesn't create this risk. The concern is specifically free proxy or VPN apps that monetize themselves by relaying other users' traffic through your device — the opposite of what you'd expect a privacy tool to do. Reading the terms of service before installing a free VPN app is worth the few minutes it takes.

What should I do if I suspect my router has been compromised?

Check whether your router still receives manufacturer firmware updates and install any pending updates. If it's end-of-life and unsupported, a factory reset followed by replacement is the safest path, since a reset alone won't fix an unpatched vulnerability that could simply be re-exploited.