{"id":21430,"date":"2026-08-03T20:44:19","date_gmt":"2026-08-03T20:44:19","guid":{"rendered":"https:\/\/cryptozen.asia\/vn\/vi-bitcoin-khong-ket-noi-internet-lo-hong-coldcard-va-tac-dong-den-an-ninh-ngoai-tuyen\/"},"modified":"2026-08-03T20:44:19","modified_gmt":"2026-08-03T20:44:19","slug":"vi-bitcoin-khong-ket-noi-internet-lo-hong-coldcard-va-tac-dong-den-an-ninh-ngoai-tuyen","status":"publish","type":"post","link":"https:\/\/cryptozen.asia\/vn\/vi-bitcoin-khong-ket-noi-internet-lo-hong-coldcard-va-tac-dong-den-an-ninh-ngoai-tuyen\/","title":{"rendered":"V\u00ed Bitcoin Kh\u00f4ng K\u1ebft N\u1ed1i Internet: L\u1ed7 H\u1ed5ng Coldcard v\u00e0 T\u00e1c \u0110\u1ed9ng \u0110\u1ebfn An Ninh Ngo\u1ea1i Tuy\u1ebfn"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u v\u1ec1 ti\u1ec1n \u0111i\u1ec7n t\u1eed v\u00e0 v\u00ed kh\u00f4ng k\u1ebft n\u1ed1i internet<\/h2>\n

N\u1ebfu b\u1ea1n \u0111\u00e3 d\u00e0nh th\u1eddi gian t\u00ecm hi\u1ec3u v\u1ec1 ti\u1ec1n \u0111i\u1ec7n t\u1eed, c\u00f3 l\u1ebd b\u1ea1n \u0111\u00e3 nghe c\u00e2u n\u00f3i: “Kh\u00f4ng ph\u1ea3i ch\u00eca kh\u00f3a c\u1ee7a b\u1ea1n, kh\u00f4ng ph\u1ea3i \u0111\u1ed3ng ti\u1ec1n c\u1ee7a b\u1ea1n.”<\/strong> C\u00e2u n\u00f3i n\u00e0y ph\u1ea3n \u00e1nh \u00fd t\u01b0\u1edfng r\u1eb1ng ai ki\u1ec3m so\u00e1t ch\u00eca kh\u00f3a ri\u00eang c\u1ee7a v\u00ed th\u00ec cu\u1ed1i c\u00f9ng s\u1ebd ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c t\u00e0i s\u1ea3n ti\u1ec1n \u0111i\u1ec7n t\u1eed b\u00ean trong n\u00f3. M\u1ed9t v\u00ed kh\u00f4ng k\u1ebft n\u1ed1i internet<\/strong> (hay c\u00f2n g\u1ecdi l\u00e0 air-gapped wallet<\/em>) \u0111\u01b0a tri\u1ebft l\u00fd n\u00e0y l\u00ean m\u1ed9t b\u01b0\u1edbc xa h\u01a1n b\u1eb1ng c\u00e1ch gi\u1eef cho nh\u1eefng ch\u00eca kh\u00f3a ri\u00eang n\u00e0y ho\u00e0n to\u00e0n t\u00e1ch bi\u1ec7t kh\u1ecfi internet. Nh\u1eefng v\u00ed n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cao nh\u1ea5t m\u00e0 m\u1ed9t ng\u01b0\u1eddi n\u1eafm gi\u1eef ti\u1ec1n \u0111i\u1ec7n t\u1eed c\u00f3 th\u1ec3 c\u00f3, \u0111i\u1ec1u n\u00e0y khi\u1ebfn cho s\u1ef1 c\u1ed1 Coldcard<\/strong>, m\u1ed9t l\u1ed7 h\u1ed5ng \u0111\u00e3 d\u1eabn \u0111\u1ebfn thi\u1ec7t h\u1ea1i l\u00ean t\u1edbi 114 tri\u1ec7u \u0111\u00f4 la Bitcoin<\/strong> v\u00e0 v\u1eabn \u0111ang ti\u1ebfp di\u1ec5n, \u0111\u1eb7c bi\u1ec7t \u0111\u00e1ng lo ng\u1ea1i cho nh\u1eefng ng\u01b0\u1eddi d\u00f9ng b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/p>\n

Ch\u1ee9c n\u0103ng v\u00e0 lo\u1ea1i h\u00ecnh c\u1ee7a v\u00ed ti\u1ec1n \u0111i\u1ec7n t\u1eed<\/h2>\n

M\u1eb7c d\u00f9 t\u00ean g\u1ecdi c\u1ee7a ch\u00fang, v\u00ed ti\u1ec1n \u0111i\u1ec7n t\u1eed th\u1ef1c s\u1ef1 kh\u00f4ng l\u01b0u tr\u1eef Bitcoin, Ethereum hay c\u00e1c t\u00e0i s\u1ea3n k\u1ef9 thu\u1eadt s\u1ed1 kh\u00e1c. Thay v\u00e0o \u0111\u00f3, v\u00ed l\u01b0u tr\u1eef c\u00e1c ch\u00eca kh\u00f3a c\u00f4ng khai v\u00e0 ri\u00eang t\u01b0 cho ph\u00e9p b\u1ea1n truy c\u1eadp v\u00e0 chuy\u1ec3n ti\u1ec1n \u0111\u01b0\u1ee3c ghi l\u1ea1i tr\u00ean m\u1ed9t blockchain. M\u1ed9t ch\u00eca kh\u00f3a c\u00f4ng khai t\u01b0\u01a1ng t\u1ef1 nh\u01b0 s\u1ed1 t\u00e0i kho\u1ea3n m\u00e0 ng\u01b0\u1eddi kh\u00e1c c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ec3 g\u1eedi ti\u1ec1n \u0111i\u1ec7n t\u1eed. Ng\u01b0\u1ee3c l\u1ea1i, m\u1ed9t ch\u00eca kh\u00f3a ri\u00eang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t m\u1eadt kh\u1ea9u ho\u1eb7c ch\u1eef k\u00fd s\u1ed1 cho ph\u00e9p th\u1ef1c hi\u1ec7n giao d\u1ecbch. B\u1ea5t k\u1ef3 ai c\u00f3 quy\u1ec1n truy c\u1eadp v\u00e0o ch\u00eca kh\u00f3a ri\u00eang \u0111\u00f3 c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t c\u00e1c t\u00e0i s\u1ea3n li\u00ean quan \u0111\u1ebfn n\u00f3.<\/p>\n

V\u00ed ti\u1ec1n \u0111i\u1ec7n t\u1eed c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau, bao g\u1ed3m v\u00ed gi\u1ea5y th\u1ef1c t\u1ebf (c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t b\u1ea3n sao in ho\u1eb7c vi\u1ebft tay c\u1ee7a ch\u00eca kh\u00f3a ri\u00eang ho\u1eb7c c\u1ee5m t\u1eeb kh\u00f4i ph\u1ee5c c\u1ee7a b\u1ea1n), \u1ee9ng d\u1ee5ng ph\u1ea7n m\u1ec1m, v\u00ed di \u0111\u1ed9ng v\u00e0 thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng. Ch\u00fang c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i ch\u00ednh: v\u00ed c\u00f3 ng\u01b0\u1eddi gi\u1eef<\/strong> (custodial) v\u00e0 v\u00ed kh\u00f4ng c\u00f3 ng\u01b0\u1eddi gi\u1eef<\/strong> (non-custodial). V\u1edbi v\u00ed c\u00f3 ng\u01b0\u1eddi gi\u1eef, m\u1ed9t b\u00ean th\u1ee9 ba gi\u1eef ch\u00eca kh\u00f3a ri\u00eang c\u1ee7a b\u1ea1n thay m\u1eb7t b\u1ea1n. \u0110\u00f3 l\u00e0 tr\u01b0\u1eddng h\u1ee3p khi, v\u00ed d\u1ee5, b\u1ea1n l\u01b0u tr\u1eef Bitcoin, Ethereum, Solana ho\u1eb7c c\u00e1c t\u00e0i s\u1ea3n k\u1ef9 thu\u1eadt s\u1ed1 kh\u00e1c v\u1edbi Coinbase ho\u1eb7c m\u1ed9t s\u00e0n giao d\u1ecbch t\u1eadp trung kh\u00e1c. V\u00ed kh\u00f4ng c\u00f3 ng\u01b0\u1eddi gi\u1eef, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 v\u00ed t\u1ef1 qu\u1ea3n, \u0111\u1eb7t ng\u01b0\u1eddi d\u00f9ng ho\u00e0n to\u00e0n ki\u1ec3m so\u00e1t c\u00e1c ch\u00eca kh\u00f3a \u0111\u00f3, c\u00f9ng v\u1edbi tr\u00e1ch nhi\u1ec7m b\u1ea3o v\u1ec7 ch\u00fang.<\/p>\n

V\u00ed kh\u00f4ng k\u1ebft n\u1ed1i internet v\u00e0 b\u1ea3o m\u1eadt<\/h2>\n

M\u1ed9t v\u00ed kh\u00f4ng k\u1ebft n\u1ed1i internet l\u00e0 m\u1ed9t lo\u1ea1i v\u00ed kh\u00f4ng c\u00f3 ng\u01b0\u1eddi gi\u1eef \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u00e0n to\u00e0n kh\u00f4ng k\u1ebft n\u1ed1i v\u1edbi internet v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c ph\u01b0\u01a1ng th\u1ee9c giao ti\u1ebfp kh\u00f4ng d\u00e2y, bao g\u1ed3m Wi-Fi, Bluetooth v\u00e0 NFC. “Kho\u1ea3ng c\u00e1ch kh\u00f4ng kh\u00ed”<\/strong> \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ef1 t\u00e1ch bi\u1ec7t v\u1eadt l\u00fd gi\u1eefa v\u00ed v\u00e0 c\u00e1c m\u1ea1ng tr\u1ef1c tuy\u1ebfn. B\u1edfi v\u00ec thi\u1ebft b\u1ecb kh\u00f4ng bao gi\u1edd k\u1ebft n\u1ed1i v\u1edbi internet, n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t m\u1ee5c ti\u00eau nh\u1ecf h\u01a1n nhi\u1ec1u cho c\u00e1c hacker, ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i v\u00e0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o. Nhi\u1ec1u c\u00f4ng ty s\u1ea3n xu\u1ea5t v\u00ed ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng m\u00e0 kh\u00f4ng c\u1ea7n k\u1ebft n\u1ed1i internet ho\u1eb7c kh\u00f4ng d\u00e2y tr\u1ef1c ti\u1ebfp.<\/p>\n

Trong s\u1ed1 nh\u1eefng c\u00e1i t\u00ean n\u1ed5i ti\u1ebfng nh\u1ea5t c\u00f3 ELLIPAL<\/strong>, v\u1edbi c\u00e1c v\u00ed Titan s\u1eed d\u1ee5ng m\u00e3 QR thay v\u00ec USB ho\u1eb7c Bluetooth; Keystone<\/strong>, c\u0169ng d\u1ef1a v\u00e0o m\u00e3 QR; Foundation Devices<\/strong>, nh\u00e0 s\u1ea3n xu\u1ea5t v\u00ed Passport t\u1eadp trung v\u00e0o Bitcoin; Blockstream<\/strong>, v\u1edbi v\u00ed Jade h\u1ed7 tr\u1ee3 giao d\u1ecbch Bitcoin ho\u00e0n to\u00e0n kh\u00f4ng k\u1ebft n\u1ed1i internet b\u1eb1ng m\u00e3 QR; v\u00e0, \u0111\u00fang v\u1eady, c\u1ea3 Coldcard<\/strong>.<\/p>\n

V\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt v\u00e0 r\u1ee7i ro<\/h2>\n

Coldcard l\u00e0 m\u1ed9t v\u00ed ch\u1ec9 d\u00e0nh cho Bitcoin h\u1ed7 tr\u1ee3 k\u00fd ngo\u1ea1i tuy\u1ebfn b\u1eb1ng th\u1ebb microSD v\u00e0 m\u00e3 QR t\u00f9y ch\u1ecdn – v\u00e0 l\u00e0 m\u1ee5c ti\u00eau c\u1ee7a m\u1ed9t l\u1ed7 h\u1ed5ng firmware g\u1ea7n \u0111\u00e2y \u0111\u00e3 d\u1eabn \u0111\u1ebfn vi\u1ec7c h\u01a1n 100 tri\u1ec7u \u0111\u00f4 la<\/strong> qu\u1ef9 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng b\u1ecb \u0111\u00e1nh c\u1eafp cho \u0111\u1ebfn nay. Trong khi c\u00e1c c\u00f4ng ty nh\u01b0 Ledger<\/strong> v\u00e0 Trezor<\/strong> c\u0169ng s\u1ea3n xu\u1ea5t v\u00ed ph\u1ea7n c\u1ee9ng, c\u00e1c thi\u1ebft b\u1ecb c\u1ee7a h\u1ecd th\u01b0\u1eddng k\u1ebft n\u1ed1i qua USB ho\u1eb7c Bluetooth trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng b\u00ecnh th\u01b0\u1eddng. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c v\u00ed kh\u00f4ng k\u1ebft n\u1ed1i internet \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ngay t\u1eeb \u0111\u1ea7u \u0111\u1ec3 gi\u1eef cho c\u00e1c ch\u00eca kh\u00f3a ri\u00eang t\u00e1ch bi\u1ec7t kh\u1ecfi internet. Nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 ch\u00fang mi\u1ec5n nhi\u1ec5m v\u1edbi c\u00e1c l\u1ed7 h\u1ed5ng ti\u1ec1m \u1ea9n.<\/p>\n

\n

Nh\u01b0 c\u00e1c chuy\u00ean gia b\u1ea3o m\u1eadt \u0111\u00e3 nhanh ch\u00f3ng nh\u1eafc nh\u1edf ng\u01b0\u1eddi d\u00f9ng g\u1ea7n \u0111\u00e2y, kh\u00f4ng c\u00f3 t\u00f9y ch\u1ecdn n\u00e0o l\u00e0 100% an to\u00e0n.<\/p>\n<\/blockquote>\n

Gi\u1eef m\u1ed9t v\u00ed ho\u00e0n to\u00e0n ngo\u1ea1i tuy\u1ebfn gi\u1ea3m \u0111\u00e1ng k\u1ec3 nguy c\u01a1 b\u1ecb t\u1ea5n c\u00f4ng t\u1eeb xa. Ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i kh\u00f4ng th\u1ec3 truy c\u1eadp tr\u1ef1c ti\u1ebfp v\u00e0o m\u1ed9t v\u00ed kh\u00f4ng bao gi\u1edd k\u1ebft n\u1ed1i v\u1edbi internet, v\u00e0 c\u00e1c hacker kh\u00f4ng th\u1ec3 khai th\u00e1c c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng kh\u00f4ng t\u1ed3n t\u1ea1i. Tuy nhi\u00ean, \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 c\u00e1c v\u00ed kh\u00f4ng k\u1ebft n\u1ed1i internet mi\u1ec5n nhi\u1ec5m v\u1edbi m\u1ecdi m\u1ed1i \u0111e d\u1ecda. Ng\u01b0\u1eddi d\u00f9ng v\u1eabn ph\u1ea3i b\u1ea3o v\u1ec7 c\u1ee5m t\u1eeb kh\u00f4i ph\u1ee5c c\u1ee7a h\u1ecd, x\u00e1c minh chi ti\u1ebft giao d\u1ecbch tr\u01b0\u1edbc khi k\u00fd v\u00e0 gi\u1eef cho thi\u1ebft b\u1ecb v\u1eadt l\u00fd an to\u00e0n. M\u1ea5t c\u1ee5m t\u1eeb kh\u00f4i ph\u1ee5c – ho\u1eb7c b\u1ecb \u0111\u00e1nh c\u1eafp – c\u00f3 th\u1ec3 l\u00e0m m\u1ea5t quy\u1ec1n truy c\u1eadp v\u00e0o v\u00ed v\u0129nh vi\u1ec5n.<\/p>\n

K\u1ebft lu\u1eadn<\/h2>\n

S\u1ef1 \u0111\u00e1nh \u0111\u1ed5i l\u00e0 s\u1ef1 ti\u1ec7n l\u1ee3i. Vi\u1ec7c g\u1eedi ti\u1ec1n th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn vi\u1ec7c qu\u00e9t m\u00e3 QR ho\u1eb7c chuy\u1ec3n t\u1ec7p gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb, l\u00e0m cho qu\u00e1 tr\u00ecnh n\u00e0y ch\u1eadm h\u01a1n so v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng v\u00ed ph\u1ea7n m\u1ec1m ti\u00eau chu\u1ea9n ho\u1eb7c t\u00e0i kho\u1ea3n s\u00e0n giao d\u1ecbch. C\u00e1c s\u1ef1 ki\u1ec7n g\u1ea7n \u0111\u00e2y \u0111\u00e3 cho th\u1ea5y r\u1eb1ng ngay c\u1ea3 c\u00e1c v\u00ed kh\u00f4ng k\u1ebft n\u1ed1i internet c\u0169ng c\u00f3 th\u1ec3 ch\u1ee9a nh\u1eefng l\u1ed7i nghi\u00eam tr\u1ecdng. V\u00e0o cu\u1ed1i th\u00e1ng 7 n\u0103m 2026, nh\u00e0 s\u1ea3n xu\u1ea5t v\u00ed ph\u1ea7n c\u1ee9ng Bitcoin Coinkite \u0111\u00e3 ti\u1ebft l\u1ed9 r\u1eb1ng m\u1ed9t l\u1ed7i trong firmware \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o th\u00e1ng 3 n\u0103m 2021 \u0111\u00e3 khi\u1ebfn m\u1ed9t s\u1ed1 v\u00ed Coldcard t\u1ea1o ra c\u00e1c c\u1ee5m t\u1eeb h\u1ea1t gi\u1ed1ng t\u1eeb m\u1ed9t t\u1eadp h\u1ee3p gi\u00e1 tr\u1ecb nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi d\u1ef1 \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y \u0111\u00e3 gi\u1ea3m \u0111\u1ed9 ng\u1eabu nhi\u00ean b\u1ea3o v\u1ec7 c\u00e1c ch\u00eca kh\u00f3a ri\u00eang c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, khi\u1ebfn ch\u00fang d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng tr\u01b0\u1edbc nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 \u0111o\u00e1n \u0111\u01b0\u1ee3c – ho\u1eb7c s\u1eed d\u1ee5ng AI \u0111\u1ec3 \u0111o\u00e1n nhanh h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1ch h\u1ecd c\u00f3 th\u1ec3 l\u00e0m th\u1ee7 c\u00f4ng.<\/p>\n

\u0110i\u1ec1u \u0111\u00f3 t\u1ec7 nh\u01b0 n\u00f3 nghe. M\u1ed9t l\u1ea7n n\u1eefa, nh\u01b0 m\u1ed9t l\u1eddi nh\u1eafc nh\u1edf, n\u1ebfu ai \u0111\u00f3 kh\u00e1c c\u00f3 ch\u00eca kh\u00f3a ri\u00eang c\u1ee7a b\u1ea1n – ho\u1eb7c v\u00ec n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u00fang c\u00e1ch, ho\u1eb7c b\u1ea1n \u0111\u00e3 tr\u1edf th\u00e0nh n\u1ea1n nh\u00e2n c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng ho\u1eb7c l\u1eeba \u0111\u1ea3o, ho\u1eb7c v\u00ec k\u1ebb t\u1ea5n c\u00f4ng \u0111\u01a1n gi\u1ea3n \u0111o\u00e1n \u0111\u00fang b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng AI ho\u1eb7c ph\u1ea7n m\u1ec1m kh\u00e1c – h\u1ecd hi\u1ec7n c\u00f3 quy\u1ec1n ki\u1ec3m so\u00e1t t\u1ea5t c\u1ea3 c\u00e1c qu\u1ef9 li\u00ean quan \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 \u0111\u00f3. V\u00ec v\u1eady, b\u00e0i h\u1ecdc kh\u00f3 kh\u0103n \u1edf \u0111\u00e2y cho nh\u1eefng ng\u01b0\u1eddi n\u1eafm gi\u1eef ti\u1ec1n \u0111i\u1ec7n t\u1eed c\u00f3 \u00fd th\u1ee9c v\u1ec1 b\u1ea3o m\u1eadt l\u00e0: trong khi c\u00e1c v\u00ed kh\u00f4ng k\u1ebft n\u1ed1i internet c\u00f3 th\u1ec3 kh\u00f4ng bao gi\u1edd ch\u1ea1m v\u00e0o internet, c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 s\u1eed d\u1ee5ng ch\u00fang v\u1eabn ph\u1ee5 thu\u1ed9c v\u00e0o nh\u00e0 s\u1ea3n xu\u1ea5t v\u00ed ph\u1ea7n c\u1ee9ng cho s\u1ef1 an to\u00e0n c\u00e1 nh\u00e2n c\u1ee7a h\u1ecd. V\u00e0 con ng\u01b0\u1eddi v\u1eabn c\u00f3 th\u1ec3 m\u1eafc sai l\u1ea7m.<\/p>\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i Galaxy Research<\/strong> cho bi\u1ebft l\u1ed7 h\u1ed5ng Coldcard di\u1ec5n ra theo nhi\u1ec1u \u0111\u1ee3t, v\u1edbi thi\u1ec7t h\u1ea1i quan s\u00e1t \u0111\u01b0\u1ee3c t\u0103ng t\u1eeb kho\u1ea3ng 88 tri\u1ec7u \u0111\u00f4 la<\/strong> l\u00ean g\u1ea7n 114 tri\u1ec7u \u0111\u00f4 la<\/strong> Bitcoin trong v\u00f2ng v\u00e0i ng\u00e0y. S\u1ef1 c\u1ed1 n\u00e0y \u0111\u00e3 khi\u1ebfn nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng Coldcard chuy\u1ec3n Bitcoin c\u1ee7a h\u1ecd sau khi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u1ea3nh b\u00e1o r\u1eb1ng c\u00e1c \u0111\u1ecba ch\u1ec9 d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng kh\u00e1c v\u1eabn c\u00f3 th\u1ec3 b\u1ecb nh\u1eafm \u0111\u1ebfn. S\u1ef1 vi ph\u1ea1m n\u00e0y \u0111\u1eb7c bi\u1ec7t \u0111\u00e1ng ch\u00fa \u00fd v\u00ec Coldcard, \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o n\u0103m 2017, \u0111\u00e3 l\u00e2u \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t trong nh\u1eefng v\u00ed ph\u1ea7n c\u1ee9ng Bitcoin t\u1eadp trung v\u00e0o b\u1ea3o m\u1eadt nh\u1ea5t. S\u1ef1 c\u1ed1 n\u00e0y nh\u1ea5n m\u1ea1nh r\u1eb1ng vi\u1ec7c gi\u1eef m\u1ed9t v\u00ed ngo\u1ea1i tuy\u1ebfn b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i nhi\u1ec1u m\u1ed1i \u0111e d\u1ecda tr\u1ef1c tuy\u1ebfn, nh\u01b0ng kh\u00f4ng th\u1ec3 lo\u1ea1i b\u1ecf m\u1ecdi r\u1ee7i ro. B\u1ea3o m\u1eadt c\u1ee7a m\u1ed9t v\u00ed c\u0169ng ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a ph\u1ea7n c\u1ee9ng, firmware, quy tr\u00ecnh t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean v\u00e0 th\u1ef1c ti\u1ec5n ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m. M\u1ed9t kho\u1ea3ng c\u00e1ch kh\u00f4ng kh\u00ed l\u00e0 m\u1ed9t l\u1edbp ph\u00f2ng th\u1ee7 quan tr\u1ecdng – kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb kh\u00f4ng c\u00f3 l\u1ed7 h\u1ed5ng. M\u1ed9t c\u00e1ch \u0111\u1ec3 gi\u00fap gi\u1ea3m thi\u1ec3u c\u00e1c r\u1ee7i ro ti\u1ec1m \u1ea9n, theo c\u00e1c chuy\u00ean gia b\u1ea3o m\u1eadt, l\u00e0 tr\u00e1nh c\u00e1c \u0111i\u1ec3m th\u1ea5t b\u1ea1i \u0111\u01a1n l\u1ebb – c\u00f3 ngh\u0129a l\u00e0, \u0111\u1eebng gi\u1eef t\u1ea5t c\u1ea3 ti\u1ec1n \u0111i\u1ec7n t\u1eed c\u1ee7a b\u1ea1n \u1edf m\u1ed9t n\u01a1i.<\/p>\n","protected":false},"excerpt":{"rendered":"

Gi\u1edbi thi\u1ec7u v\u1ec1 ti\u1ec1n \u0111i\u1ec7n t\u1eed v\u00e0 v\u00ed kh\u00f4ng k\u1ebft n\u1ed1i internet N\u1ebfu b\u1ea1n \u0111\u00e3 d\u00e0nh th\u1eddi gian t\u00ecm hi\u1ec3u v\u1ec1 ti\u1ec1n \u0111i\u1ec7n t\u1eed, c\u00f3 l\u1ebd b\u1ea1n \u0111\u00e3 nghe c\u00e2u n\u00f3i: “Kh\u00f4ng ph\u1ea3i ch\u00eca kh\u00f3a c\u1ee7a b\u1ea1n, kh\u00f4ng ph\u1ea3i \u0111\u1ed3ng ti\u1ec1n c\u1ee7a b\u1ea1n.” C\u00e2u n\u00f3i n\u00e0y…<\/p>\n","protected":false},"author":3,"featured_media":21429,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42,47],"tags":[4225,4947,4226,12442,10635,4218,4313,4241,4312,4243],"class_list":["post-21430","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bitcoin","category-hack","tag-bitcoin","tag-blockstream","tag-coinbase","tag-coldcard","tag-ellipal","tag-ethereum","tag-hack","tag-ledger","tag-solana","tag-trezor"],"yoast_head":"\nV\u00ed Bitcoin Kh\u00f4ng K\u1ebft N\u1ed1i Internet: L\u1ed7 H\u1ed5ng Coldcard v\u00e0 T\u00e1c \u0110\u1ed9ng \u0110\u1ebfn An Ninh Ngo\u1ea1i Tuy\u1ebfn - CryptoZen<\/title>\n<meta name=\"description\" content=\"Kh\u00e1m ph\u00e1 v\u00ed Bitcoin kh\u00f4ng k\u1ebft n\u1ed1i internet v\u00e0 c\u00e1ch l\u1ed7 h\u1ed5ng Coldcard \u0111\u00e3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c cu\u1ed9c th\u1ea3o 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