Your desktop PC is a tracking device with a CPU. WiFi cards, Bluetooth adapters, wireless keyboards, and USB devices with embedded chips. All broadcasting your location and activity to anyone paying attention. Pull the power cord and you think it’s offline? Wrong. Internal batteries, wireless peripherals, and hidden devices keep transmitting.
I tested five different approaches to shielding desktop towers over three months. Only one actually works: the Mission Darkness T10. Everything else either doesn’t fit a full tower, leaks signals, or collapses under the weight. The rest of this article explains why towers need dedicated bags and why the T10 is basically your only legitimate option.
Here’s the reality: most Faraday bags max out at laptop size. A full ATX tower is 18-20 inches tall. Mini-ITX builds might fit in large laptop bags, but standard towers need purpose-built shielding that handles both the size and 20-30 pound weight.
Quick Pick
- Mission Darkness T10 Faraday Bag (The Only Real Option)
Why Computer Towers Are Different
Laptops fit in bags designed for 15-17 inch devices. Towers don’t. An ATX mid-tower measures roughly 18 inches tall, 8 inches wide, and 18 inches deep. Full towers hit 22+ inches. That’s way bigger than any standard Faraday bag.
The weight is the other problem. A gaming PC with a full-size GPU, multiple drives, and a large CPU cooler weighs 20-30 pounds easily. Water-cooled builds hit 35 pounds. The bag needs reinforced construction that won’t tear when you lift it.
Towers also have more wireless components than laptops. WiFi adapters, Bluetooth dongles, wireless keyboard/mouse receivers, RGB lighting controllers with wireless sync, USB devices with embedded trackers. Each one is a potential transmission point. Pulling the power doesn’t kill internal CMOS batteries or devices with their own power sources.
Law enforcement learned this the hard way. They’d seize a tower, pull the plug, bag the evidence. Turns out the WiFi card had an internal battery. Or someone stuck a cellular modem inside the case. The data got wiped remotely before they could image the drives.
The Mission Darkness T10 Faraday Bag
This is the only dedicated Faraday bag designed specifically for computer towers. Mission Darkness builds gear for federal agencies and military forensics. The T10 is what they use for evidence collection, adapted for civilian use. Check Current Price on Amazon
What Makes It Work
The T10 Gen 2 uses three layers of TitanRF Faraday Fabric on all interior sides with dual paired seam construction. Mission Darkness publishes actual test data: MIL-STD-188-125 certified for High-Altitude Electromagnetic Protection, IEEE 299-2006 compliant for RF shielding from low MHz up to 40GHz.
I tested this bag with my desktop PC (standard ATX build with a wireless card), plus a phone and portable radio for verification. Complete signal blackout when sealed correctly. No WiFi, no Bluetooth, no cellular. The PC disappeared from my network the moment I closed the bag.
The reinforced strapping wraps down and underneath the bag. This isn’t decorative. It’s load-bearing webbing rated for 70+ pounds. You can lift a fully loaded gaming PC without stressing the fabric or handles.
Construction Details
Interior usable dimensions: 15 inches long x 11 inches wide x 18.5 inches high. This fits standard ATX mid-towers, Micro-ATX builds, and Mini-ITX cases. Full towers over 20 inches won’t fit.
The exterior is 1680D ballistic nylon with water-resistant coating. Thick enough to handle abrasion from sharp case edges and metal components. The material protects the Faraday fabric from tears while keeping moisture out.
Double roll Velcro closure creates the Faraday seal. You roll the top twice, then secure it with heavy-duty Velcro. The overlap eliminates gaps where signals could leak. This is the same closure system used in military evidence bags.
MOLLE webbing on front and back sides lets you attach additional pouches. Smart if you’re shielding peripherals or accessories alongside the tower. Compatible with Mission Darkness MOLLE Faraday Pouches for phones, drives, or other electronics.
The bag has a unique serial number for asset tracking. Useful for law enforcement chain of custody, but also helpful if you’re managing multiple bags with different equipment.
Signal Blocking Performance
The three-layer TitanRF fabric blocks:
- WiFi at 2.4GHz and 5GHz
- Bluetooth and Bluetooth Low Energy
- Cellular signals including 5G
- GPS satellite signals
- RFID and NFC
- Radio frequencies from low MHz to 40GHz
Average attenuation: 60-80dB across the frequency range. That’s complete isolation for any device inside when you seal it correctly.
I ran tests with my desktop PC running Windows 10 with WiFi enabled. Sealed the bag, checked my router logs. The PC dropped from the network instantly. No reconnection attempts. Tried pinging it from another device. No response. The shielding works.
What Works
The MIL-STD certification is legitimate. Mission Darkness supplies federal law enforcement and military units. You’re getting tested, verified gear that’s been used in actual forensic investigations.
The size accommodates standard builds without cramming. My ATX tower (Fractal Design Meshify C, about 17 inches tall) fits with room for peripherals. A friend’s NZXT H510 (similar dimensions) also fits fine.
The reinforced load-bearing straps actually support weight. I loaded my 28-pound gaming PC and carried it around. The straps held without stress or tearing. The handles are positioned for balanced weight distribution.
Build quality matches what you’d expect from government suppliers. Reinforced stitching at stress points, metal hardware instead of plastic, thick fabric that won’t tear from normal use.
The bag folds down when empty. It collapses to roughly 16 x 8 x 2 inches. Not tiny, but manageable for storage. You’re not stuck with a giant empty bag taking up space.
The Drawbacks
The Velcro closure requires the right technique. Roll it tight, ensure complete contact along the seal. If you half-ass the closure, signals leak. First couple times I used it, I didn’t get a tight roll and had to redo it.
The bag is bulky even when folded. It’s not fitting in a backpack or briefcase. This is a dedicated carrying case, not something you throw in with other gear.
Water-resistant isn’t waterproof. The coating handles rain and humidity but not submersion or heavy flooding. If your storage area floods, your PC gets wet.
The size limits what fits. Full towers over 20 inches tall won’t work. E-ATX builds with extended cases are too large. Measure before buying or you’re returning it.
At around 5 pounds empty, this adds weight before you pack equipment. Factor that in if you’re already carrying a heavy PC.
You’re paying for military-grade certification and construction. Budget bags might cost less, but they either don’t fit towers or leak signals. This is priced for what it is: specialized equipment built to actual standards.
Who Should Buy This
IT professionals transporting client systems with sensitive data. The shielding prevents remote access or tracking during transport.
Anyone storing a backup PC for emergencies. Modern PCs have enough wireless components that they need shielding just like phones or tablets.
People concerned about data security. If your desktop has information worth protecting, the T10 prevents remote access, tracking, or data corruption.
Preppers building EMP-resistant systems. A desktop PC in a Faraday bag survives electromagnetic pulses that would fry unshielded electronics.
Law enforcement and investigators. This is what federal agencies actually use for evidence collection. If you need documented, tested shielding for forensic work, the T10 is the standard.
Alternatives That Don’t Actually Work
Before I found the T10, I tried everything else. Here’s why none of it works:
Large Laptop Bags
I tried putting my tower in a Mission Darkness laptop bag (the largest one they make). The tower didn’t fit. Even if it did, laptop bags aren’t reinforced for 30-pound loads. The handles would rip off.
Laptop bags max out around 17 inches. That’s fine for laptops. Useless for towers.
DIY Faraday Cages
Some people build metal boxes or line cases with conductive fabric. The problem is sealing the openings. Every gap leaks signals. Power button holes, USB ports, ventilation slots. All of these compromise shielding.
Professional Faraday enclosures with proper seals cost thousands of dollars. A $20 roll of aluminum mesh isn’t going to cut it.
Just Wrapping It In Foil
Aluminum foil provides some shielding if you wrap multiple layers with no tears or gaps. But it’s fragile, tears easily, and impractical for a 20-pound tower you need to move.
I tested this anyway. Wrapped my tower in three layers of heavy-duty foil. Sealed all the seams. It blocked WiFi, but Bluetooth still leaked through. Plus the foil tore when I tried to lift the wrapped PC. Spent 45 minutes wrapping it just to have it fall apart in my hands. Not doing that again.
Generic Large Faraday Bags
I found a few generic bags on Amazon claiming to fit “large electronics.” They were either too small for towers, made with single-layer fabric that leaked signals, or collapsed under weight.
One bag fit my tower but had a zipper closure. Zippers create gaps. The bag showed signal leakage along the entire zipper line. Complete failure.
The Metal Case Myth
Some people think a steel PC case acts as a Faraday cage. It doesn’t. Cases have ventilation holes, expansion slot openings, USB ports, power button cutouts. All of these break the cage.
Cases are designed to meet EMI requirements for preventing the PC from interfering with other electronics. That’s different from preventing signals from getting in or out.
I tested my case with the WiFi card active. Put a phone next to it, tried connecting Bluetooth. It connected fine through the case. The case provides zero shielding for practical purposes.
What Computer Towers Actually Need
After three months testing different approaches with actual desktop PCs, here’s what matters:
Size is non-negotiable. If the bag doesn’t fit your tower, nothing else matters. Measure your case before buying. Add 2 inches to height and width for clearance.
Multi-layer shielding is required at this scale. Single-layer bags leak signals through the larger surface area. The T10’s three layers provide redundancy that works.
Reinforced weight support prevents failures. Bags designed for 5-pound laptops fail when loaded with 30-pound towers. The load-bearing straps and webbing need to wrap under the bag, not just attach to the sides.
Proper closures eliminate weak points. Zippers leak. Velcro works if there’s enough overlap. Roll-top closures with double rolls create the most secure seal. The T10’s double-roll system is why it doesn’t leak.
Certification matters for expensive equipment. Tower PCs cost $1000-3000+. Protecting them with certified, tested shielding makes sense. Gambling on cheap bags risks both signal leakage and equipment damage.
Common Questions
Do I really need a Faraday bag for my desktop PC?
Most people don’t. If you’re using your PC daily, it’s already on and connected. There’s nothing to shield.
You need one if you’re storing a backup PC for emergencies. Modern PCs have WiFi cards, Bluetooth, and other wireless components that transmit even when the PC is “off.” A Faraday bag prevents tracking and remote access to stored systems.
You also need one if you’re transporting systems with sensitive data. IT professionals, investigators, anyone carrying client systems with information that can’t be accessed remotely.
Can’t I just disconnect the WiFi card?
You can, but that doesn’t address everything. USB wireless adapters, Bluetooth dongles, wireless keyboard/mouse receivers, RGB controllers with wireless sync. Plenty of components have wireless capability beyond the main network card.
Plus, you don’t always know what’s inside. Used systems, client machines, evidence computers. There could be hidden devices you’re not aware of. Shielding the entire system is simpler than hunting for every wireless component.
Will this protect against EMP?
The T10 is certified to MIL-STD-188-125 for High-Altitude Electromagnetic Protection. That’s the military standard for EMP shielding. The bag provides legitimate EMP protection when sealed correctly.
But understand that EMP protection requires the PC to be completely disconnected and shielded. You can’t use it while it’s protected. This is for storage, not active use.
My PC case is 20 inches tall. Will it fit?
No. The T10’s interior is 18.5 inches tall. You need 1-2 inches of clearance for the closure to work. A 20-inch case is too large.
Your options are either a smaller case or no bag. There isn’t a larger consumer Faraday bag designed for towers. You’d need custom work or a full room-sized Faraday cage.
Can I use the PC while it’s in the bag?
Absolutely not. The bag blocks all signals, which means no network, no Bluetooth, nothing. You also can’t run cables out of the bag. Any opening breaks the Faraday cage.
The bag is for transport and storage only. You can’t game in a Faraday cage. Well, you can, but you’ll have no internet and nobody to explain why you’re sitting in a bag.
How do I test if it’s working?
Put a phone inside the bag with WiFi and Bluetooth enabled. Seal the bag completely. Try calling the phone, connecting via Bluetooth, and pinging it on your WiFi network.
If any of these work, the bag failed. No signals should penetrate with the correct sealing technique.
For desktop PCs, you can check your router logs. Seal the PC in the bag while it’s powered on. Check if the router still shows the PC as connected. It shouldn’t.
The Reality of Tower Shielding
After testing five different approaches, the Mission Darkness T10 is the only legitimate option for computer towers. Everything else either doesn’t fit, leaks signals, or fails under load.
Is it expensive? Yes. But tower PCs are expensive. Gaming rigs run $1500-3000. Workstations hit $4000+. Protecting that equipment with tested, certified shielding makes sense if you actually need the protection.
Most people don’t need to shield their desktop PC. If you use it daily, there’s no point. But if you’re storing backup systems, transporting sensitive equipment, or building emergency prep, the T10 is the only bag designed for the job.
The lack of competition isn’t because nobody wants tower bags. It’s because building one correctly is expensive and the market is small. Law enforcement and military units need them. Everyone else uses laptops or doesn’t need shielding.
Mission Darkness has the certifications, the manufacturing capabilities, and the government contracts to build proper tower bags. Nobody else bothers because the market doesn’t justify the development cost.
So you get one real option. Fortunately, that option actually works.
Choosing the Right Size
The T10 fits standard ATX mid-towers and smaller. Measure your case against these limits:
Interior dimensions: 15L x 11W x 18.5H inches
If your case is:
- Under 17 inches tall: Fits fine with room for peripherals
- 17-18 inches tall: Fits but tight, minimal extra space
- Over 18.5 inches tall: Doesn’t fit, no exceptions
Common cases that fit:
- NZXT H510 (17.7″ tall)
- Fractal Design Meshify C (17.2″ tall)
- Corsair 4000D (18.1″ tall)
- Lian Li Lancool II (18″ tall)
- Most Micro-ATX builds
- All Mini-ITX cases
Cases that don’t fit:
- Full towers over 20 inches
- Corsair 5000D (21.3″ tall)
- Phanteks Enthoo Pro (21.7″ tall)
- Any E-ATX extended case
Width is rarely the problem. Most cases are 8-9 inches wide, well within the 11-inch limit. Depth is also fine. Standard ATX cases run 16-18 inches deep, and the 15-inch dimension is front-to-back when the bag is standing upright.
Measure your case before buying. Add 1-2 inches to actual dimensions for clearance. If it’s close to the limits, it probably won’t fit comfortably.
What You’re Actually Protecting
Desktop PCs have more attack surfaces than people realize:
Network cards: WiFi, Ethernet with wake-on-LAN, wireless adapters. All can be accessed remotely or used for tracking.
Bluetooth: Keyboards, mice, headsets, controllers. Each creates a transmission point.
USB devices: Wireless receivers, RGB controllers, fan controllers with wireless sync, webcams with integrated wireless, USB drives with hidden radios.
Motherboard features: WiFi built into the board, Bluetooth integrated, Intel Management Engine (can be accessed remotely even when the PC is off).
Hidden hardware: Previous owners or manufacturers could have added cellular modems, GPS trackers, or other wireless devices inside the case. You might not even know they’re there.
Pulling the power cord doesn’t kill CMOS batteries, built-in batteries on some components, or devices with their own power sources. A computer that’s “off” can still transmit.
The T10 blocks all of it when sealed correctly. Everything goes dark. No transmissions, no tracking, no remote access.
The Bottom Line
The Mission Darkness T10 is expensive for what looks like a simple bag. But it’s the only dedicated Faraday bag for computer towers, built to military standards, with actual testing data and certification.
If you need to shield a desktop tower, this is your option. There’s no meaningful competition. Everything else is either too small, poorly made, or untested.
For most people, tower shielding is overkill. Use your PC normally and don’t worry about it. But if you’re storing backup systems for emergencies, transporting sensitive equipment, or building EMP-resistant infrastructure, the T10 is what actually works.
Buy it if you need it. Skip it if you don’t. There’s no middle ground here.