When a Twitch streamer known as xQc lost his internet connection shortly after playing Crab Game in November 2021, the game's developer quickly warned content creators to avoid public lobbies. The developer discovered that the game could expose players' internet protocol addresses, leaving them vulnerable to distributed denial-of-service attacks. While xQc could not definitively confirm an attack caused that particular outage, the developer promptly migrated to newer Steam networking protocols to obscure player addresses. IP addresses primarily serve to route data packets to and from gaming servers and websites.
Key takeaways
- An IP address does not grant hackers access to personal passwords or data.
- Public IP lookups can reveal an internet service provider and general city or region.
- DDoS attacks can overwhelm home networks and disrupt gaming or video calls.
- Properly configured router firewalls can block unsolicited external connections.
How IP addresses expose your network
An IP address lookup acts as a quick method to reveal a user's internet service provider alongside an approximate city or region. The limitations of geographic mapping became apparent in 2016 when a Kansas family filed a lawsuit against MaxMind. The company's database had mapped roughly 650 million unrelated IP addresses directly to their farm, triggering repeated law enforcement visits over unrelated incidents occurring elsewhere. Beyond location mapping, a standard DDoS attack floods a specific target with an overwhelming volume of traffic from multiple sources. Social platforms like Bluesky have blamed similar attacks for server outages. On a smaller scale, these attacks can interrupt video calls, gaming sessions, or an entire household connection, rendering standard firewalls ineffective once the pipeline becomes overwhelmed.
Navigating the shift between IPv4 and IPv6
Most home routers currently allow multiple household devices to share a single public IPv4 address. Meanwhile, IPv6 architecture can assign every individual device its own public-facing address. This technical shift often raises security concerns, but a properly configured router firewall will successfully block unsolicited external connections while still permitting inbound responses to traffic initiated from inside the home. A Reddit user running OpenWrt enabled IPv6 and discovered via remote testing that file-sharing and remote-access ports were reachable from the wider internet because their firewall permitted forwarding. Adjusting that setting to reject traffic immediately closed the opening.
Securing your home network against emerging threats
Achieving unauthorized access to an actual device requires a specific entry point, such as an exposed security camera, a home server featuring weak password protection, or remote-access software containing a security flaw. Configurations like IPv4 port forwarding or permissive IPv6 firewall rules can unintentionally expose those vulnerable services. Furthermore, Microsoft disclosed a critical vulnerability designated as CVE-2026-105016 in October 2026 regarding its QUIC implementation. This flaw could potentially allow specially crafted IPv6 traffic to execute arbitrary code inside affected .NET applications on Windows operating systems, though Microsoft advisories did not confirm active exploitation. Experts recommend inspecting router firewall settings for both protocols, eliminating unnecessary remote-access rules, and applying security patches rather than disabling IPv6 entirely, as Microsoft notes that turning off IPv6 can break certain Windows components. Although virtual private networks can mask a standard public IP address from websites, they must handle both IPv4 and IPv6 traffic correctly to be effective, and they cannot patch underlying software vulnerabilities.
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