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A login box under siege, and the attackers are mugs of tea.
Hundreds of tiny, angry mugs swarm the front of the shirt, all heading for one small login box on the chest. The box says what you’d expect: ACCESS DENIED, attempt 4,812,331, BREW-FORCE ATTACK DETECTED. The password field isn’t empty, though. It holds a real NTLM hash, and that hash is a flag worth points in our CTF. Crack it, then submit it under “Found on our merch” on the challenges page. Bring a wordlist.
The details
• Full-front print, about 29 cm wide, with the login box sitting at pocket height
• Soft, lightweight cotton with a little stretch
• 100% combed and ring-spun cotton (heather colours contain polyester)
• Fabric weight: 142 g/m² (4.2 oz/yd²)
• Pre-shrunk, so it keeps its size in the wash
• Side seams for a better fit, and taped shoulders that hold their shape
• Garment sourced from Nicaragua, Mexico, Honduras or the US
Good to know: the fabric is lightweight and can look slightly see-through in some lighting, although that’s much less noticeable on the dark colours.
Care: wash cold, inside out. Don’t iron over the print.
Brew-Force Attack T-Shirt
£27.00 GBP
Hundreds of tiny, angry mugs swarm the front of the shirt, all heading for one small login box on the chest. The box says what you’d expect: ACCESS DENIED, attempt 4,812,331, BREW-FORCE ATTACK DETECTED. The password field isn’t empty, though. It holds a real NTLM hash, and that hash is a flag worth points in our CTF. Crack it, then submit it under “Found on our merch” on the challenges page. Bring a wordlist.
The details
• Full-front print, about 29 cm wide, with the login box sitting at pocket height
• Soft, lightweight cotton with a little stretch
• 100% combed and ring-spun cotton (heather colours contain polyester)
• Fabric weight: 142 g/m² (4.2 oz/yd²)
• Pre-shrunk, so it keeps its size in the wash
• Side seams for a better fit, and taped shoulders that hold their shape
• Garment sourced from Nicaragua, Mexico, Honduras or the US
Good to know: the fabric is lightweight and can look slightly see-through in some lighting, although that’s much less noticeable on the dark colours.
Care: wash cold, inside out. Don’t iron over the print.
Size guide
| LENGTH (inches) | WIDTH (inches) | CHEST (inches) | |
| XS | 27 | 16 ½ | 31-34 |
| S | 28 | 18 | 34-37 |
| M | 29 | 20 | 38-41 |
| L | 30 | 22 | 42-45 |
| XL | 31 | 24 | 46-49 |
| 2XL | 32 | 26 | 50-53 |
| 3XL | 33 | 28 | 54-57 |
| LENGTH (cm) | WIDTH (cm) | CHEST (cm) | |
| XS | 68.6 | 42 | 78.7-86.4 |
| S | 71.1 | 45.7 | 86.4-94 |
| M | 73.7 | 50.8 | 96.5-104.1 |
| L | 76.2 | 55.9 | 106.7-114.3 |
| XL | 78.7 | 61 | 116.8-124.5 |
| 2XL | 81.3 | 66 | 127-134.6 |
| 3XL | 83.8 | 71.1 | 137.2-144.8 |