ウォレットセキュリティマニュアル · ファイル WH-2026-002
あなたのシードフレーズはまさにその鍵です。それがあなたの手から離れる瞬間 — 撮影される、WEBサイトに入力される、「サポート」に送られる — あなたのウォレットはもはやあなたのものでなくなります。このマニュアルは3つをカバーします：鍵がどう失われるか、どう守るか、失われたらどうするか。
デモ用プロップ · 詐欺師が最も求めるもの
* 上記はデモ用の言葉です。本物のシードフレーズではありません。セルをクリックして封印を外してください。
脅威帳
No elite hacker required. No device breach needed. Most thefts travel these three most ordinary paths. Know the enemy first, then know what to defend.
Fake official sites, forged airdrops, "official" DMs — all using pages that look completely legitimate to trick you into entering your seed phrase or signing malicious transactions. The FBI reported over $5.6 billion in crypto-related fraud losses in 2023 alone.
手法: 武装された信頼 · 対象: 誰でも
Screenshots, cloud sync, typing into "verification" sites, sending to "customer support." The seed phrase is the only key to your wallet. Once it leaves your hands — even once — treat it as compromised. No exceptions.
手法: 鍵の窃盗 · 結果: 回復不能
Under the "mint""claim""stake" approval popup may hide an unlimited allowance. Scammers don't need you to send funds — they can drain everything within that limit yourself. You may not notice a thing.
手法: 署名の罠 · 結果: 沈黙の drainer
防御マニュアル
これは望みリストではありません — シーケンスです。ルール1から始めてください。各ステップに従ってください。
Write it by hand on paper. Lock it in a drawer or safe. Never screenshot it, never type it into any website, never send it to anyone. A digital seed phrase is already compromised.
Store large holdings in a hardware wallet (cold). Use a separate hot wallet for daily small transactions. The two wallets must have different seed phrases — if the hot wallet is compromised, the principal stays safe in cold storage.
After pasting, verify character by character. Focus on the first and last 8 characters. Save addresses to a contacts list. Compare every time — don't just glance at the first few.
Check the scope of approvals on unfamiliar contracts. Revoke unused ones at revoke.cash. Beware of clone domains — verify the tool's own URL before confirming anything.
Large transactions should require hardware confirmation and second-factor auth. For team or family funds, use a multi-sig wallet — no single person can move everything.
Write down in advance: what to do if your device is lost, if you suspect a leak, if you send to the wrong address. List the steps now, follow them later — don't decide in a panic.
シード保管庫
「紙に書く」は物語の半分です。書くことは始まりに過ぎません — どのように保存するかが30年間生き残るかどうか、ネットワークに近づくかどうかを決定します。
Paper can be flooded, burned, eaten by insects. For long-term large holdings, metal backup (engraved stainless steel plates like Cryptosteel or Billfodl) is recommended, or at minimum waterproof paper cards with lamination. Any "digital seed phrase" in screenshots, documents, or cloud storage should be treated as compromised.
Use Shamir Secret Sharing to split your seed phrase into multiple parts stored separately (e.g. 2-of-3, 3-of-5): losing any single shard isn't fatal, leaking any single shard isn't fatal either. Best for large long-term holdings — but the shard rules themselves must be stored as securely as the seed phrase.
Main copy + backup copy + emergency copy (at a trusted person's place), stored in different physical locations. Each copy must guard against being "seen" — a roommate, a security camera, a repair worker could all become witnesses.
Generally no. Password managers live on internet-connected devices — one malware infection and your seed phrase is gone. The only truly safe "digital seed phrase" exists on a fully offline device, and even then there's still the risk of being photographed or cloud-backed up. Beginners should skip this route.
One wrong word in your seed phrase and recovery will fail. After writing it down, practice recovery right away: delete your wallet, recover using only the paper words, confirm it works — this is the only way to verify your backup is actually good.
NEVER screenshot it. NEVER type it into any website. NEVER send it to anyone — including those claiming to be official, security experts, or customer support. NEVER put it on any internet-connected device.
赤旗
詐欺は常に進化しますが、その欠陥は変わりません。これら一つだけで十分です 停止、確認、離れる。
"Last 2 hours""Account will be frozen if you don't act." Official channels never manufacture urgency. Pressure is scam's first hallmark.
No legitimate project will ever ask for your seed phrase or private key. If they ask, it's a scam. No exceptions. No "verification."
wallet-connect-verify.com, or one or two characters off from the official spelling. Check the address bar. Don't check the page content — the page itself is fake.
Official support never DMs you first, and they never pull you into a "recovery group." "Official" contacts that come to you are, by default, fake.
An "airdrop" that asks you to send funds first is a pay-to-receive phishing trap. Real airdrops never require you to pay anything.
Can't understand the English in the approval popup? It says "unlimited"? If you don't understand it, don't sign. Close the page and come back later.
詐欺事例
シート04の赤旗を実用的なシーケンシャルで通ります。各ステップで、左側は詐欺師の動き、右側はあなたが今すべきことを示します。
You receive a DM (Telegram / Discord / X): "Hello, we're the official XX team. Congratulations — you qualify for an airdrop. Claim here: xxx-claim.com."
Don't click. Links in DMs are phishing by default. Verify through official channels — cross-reference SHEET 06, or search the official announcement directly.
The fake site (domain xxx-claim.com) looks identical to the real one — even sporting a fake "official site" badge, with a giant claim button on the homepage.
Check the address bar domain against the official entrances table, character by character. Page content can be faked. A domain cannot — you just have to look.
The page asks you to "connect wallet," or directly asks you to "enter your seed phrase to verify identity." They claim this is a required step for the airdrop.
A seed phrase must never be entered into any website. Connecting your wallet is fine — but watch the next approval popup carefully. That's the real battlefield.
The signing popup reads "Approve unlimited amount of TOKEN," with a countdown timer designed to rush you.
If you don't understand it, don't sign. See unlimited? See a countdown? See any pressure? Click "Reject," close the page, and come back later.
Assets are drained in bulk within minutes. Once a chain transfer is confirmed, it cannot be reversed.
Immediately execute SHEET 07 Emergency Checklist Step 1: move remaining assets to a brand-new wallet (new seed phrase). Isolate first, investigate later.
The scammer doesn't rush — they slowly drain within the approved limit. You may not notice for days or weeks.
Immediately revoke that contract approval (revoke.cash — verify the domain first), then monitor your balance closely.
なぜこれが重要なのか：詐欺は単一の動きではありません — それは4ステップの連鎖です：接触、罠、入り口、署名。各ステップに欠陥があり、すべてシート04に記載されています。すべての詐欺を暗記する必要はありません。各ステップで1秒間停止するだけです：これはDMですか？ドメインは正しいですか？シードを求めていますか？このポップアップを理解していますか？
公式サイト
フィッシングの多くは検索結果の広告ポジションまたはDMのリンクから始まります。固定のエントリポイントを与えてください：この表を通じてのみウォレットサイトにアクセスし、常にアドレスバーのドメインを検証してください。
ドメインは2025年8月に検証済み。「新しいURL」を受け取ったら、まずこの表に戻るか、ウォレットの公式ソーシャルアカウントでダブルチェックしてください — クローンドメインはしばしば1〜2文字違いだけです。アプリは公式サイト上のリンクを通じてのみダウンロードするか、または公式アプリストアで開発者のフルネームを直接検索してください。
SSL注意：正当なウォレットサイトはすべてHTTPSを使用していますが、SSL証明書は接続が暗号化されていることを意味するだけで、ウェブサイト自体が信頼できるという意味ではありません。ドメインとアドレスバーの確認が最も信頼できるチェックです。
緊急マニュアル
シーケンスは一つだけです：まず隔離し、次に調査する。資産の安全は常に何が起きたかを理解することより優先されます。各ステップを実行してください：
Move assets to a brand-new wallet (new seed phrase) right now — don't wait a moment. The new seed phrase goes only on paper. Treat the old one as compromised; never use it again.
Revoke suspicious contract approvals at revoke.cash (verify the domain first), then watch your balance closely. Not sure which approvals are suspicious? Revoke them all. Re-authorize only what you actually need.
Contact the project team and exchanges immediately to attempt freezing (the window is short). Preserve all evidence (transaction hashes, chat logs, links), then report to authorities. On-chain transfers are usually irreversible — that's why the first two steps always come first.
Never pay anyone to "unlock funds" or "recover lost assets." Those claiming they can help you recover are the second wave of scammers, targeting people who just got burned.
一般的な迷信
4つの最も一般的な正当化 — それぞれがあなたのウォレットにもう一つの扉を開けます。
Bulk-scanning scripts don't discriminate. They scan for assets and exposures on-chain. Small accounts are on the same list.
They protect against remote theft — they can't stop you from typing your seed phrase into a phishing page. A hardware wallet is only as safe as the hands holding its seed phrase.
Groups are public. Anyone can rename themselves "support." Impersonating official staff is the most common starting point for scams in crypto.
Checksum addresses distinguish case. Imposters construct visually similar addresses. Verify completely — at least the first and last 8 characters, and cross-reference with your address book.
用語集
上記のすべてのセクションはこれらの用語を知っていることを前提としています。読む際に詰まったら、この表に戻ってください。これはマニュアルの附录 — そしてその出発点でもあります。