- Your home network is more exposed than it should be - Your home network is more exposed than it should be. Your work laptop, banking sessions, security cameras, and smart home devices all pass through this router - a flaw here gives an attacker leverage over all of them at once.
- A real gap that affects every device sharing this Wi-Fi - It affects every device sharing this Wi-Fi - your work laptop, your phone, your kids' devices, your security cameras. Not the most urgent threat on the page, but a real edge an attacker can use to reach the rest.
- A small gap that still touches every device on this network - A small gap, not an urgent one - but it still touches everything on this network: your work laptop, your phone, your security cameras, and any guest device that joins the Wi-Fi.
This router has documented security problems. Every device on this network - your work laptop, banking app, Ring camera, smart lock - is running at higher risk than it should be.
An F is not a warning - it’s a finding that the router has been independently flagged for security or supply-chain concerns serious enough to warrant action.
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Your home network is more exposed than it should be
Your home network is more exposed than it should be. Your work laptop, banking sessions, security cameras, and smart home devices all pass through this router - a flaw here gives an attacker leverage over all of them at once.
Show technical detail
Foreign manufacture - FCC ban applies: The GigaSpire BLAST is manufactured in China. The FCC's March 2026 rule applies to ISP-supplied premises equipment as well as retail routers.
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A real gap that affects every device sharing this Wi-Fi
It affects every device sharing this Wi-Fi - your work laptop, your phone, your kids' devices, your security cameras. Not the most urgent threat on the page, but a real edge an attacker can use to reach the rest.
Show technical detail
ISP controls all configuration: Calix GigaSpire devices are fully managed by your ISP. You cannot independently audit the firmware or configure advanced security settings.
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A small gap that still touches every device on this network
A small gap, not an urgent one - but it still touches everything on this network: your work laptop, your phone, your security cameras, and any guest device that joins the Wi-Fi.
Show technical detail
US company - no Chinese government legal exposure: Calix Inc. is a US public company. The concern here is manufacturing origin, not ownership jurisdiction.
An A-rated alternative is shown below.
We'll email you if a new vulnerability hits your Calix GigaSpire BLAST u4. One email per incident. No spam.