What can this tell me about a transaction?

What kind of action it was — an approval, a transfer, a swap, a plain contract call — whether it granted a spending permission and whether that permission was unlimited, which contracts were involved, and whether it succeeded or reverted.

Why does it matter whether a transaction was an approval?

Because approvals persist. A transfer is a one-off event that is already finished. An approval is a permission that stays active until it is revoked, which is why it is the mechanism behind most drained-wallet incidents.

Why does it sometimes say the pattern was not recognised?

Some transactions call contracts whose behaviour cannot be inferred from the function selector and event logs alone. When that happens we say the pattern was not recognised instead of guessing an interpretation.

Which network was my transaction on?

A transaction hash only exists on the network it was submitted to. If the explainer says it was not found, select a different network and try again.

Crypto Security Center

Transaction explainer

Block explorers show you what happened. This shows you what it meant — in particular whether a transaction handed a contract standing permission over your tokens.

Why explanations matter

Most people confirm transactions they cannot read. Wallet prompts show a contract address, a function name and a gas estimate — none of which answer the only question that matters: what am I allowing to happen, and for how long?

Reading a transaction after the fact is how you find out that a "connect wallet" step actually granted an unlimited allowance. Reading one before you repeat the pattern is how you avoid it next time.

What we classify

Approvals, including unlimited allowances and NFT collection-wide approvals.
Token transfers and native coin transfers.
Swaps routed through decentralised exchanges.
General contract calls, and failed transactions that reverted.

Exact token amounts are not decoded yet, so the explanation describes the action rather than the precise values. That limitation is stated on every result.

Continue

Related security checks

Wallet scanner

Live

Check a wallet for risky approvals and contract exposure

A risk score, the findings behind it, and a prioritised list of what to fix first.

Open tool

Approval checker

Live

See every contract allowed to spend your tokens

A table of active approvals, ranked by how much they expose the wallet.

Open tool

Token risk scanner

Live

Review a token contract before you interact with it

A contract-level risk assessment with the specific code patterns detected.

Open tool

Questions

Frequently asked

What can this tell me about a transaction?: What kind of action it was — an approval, a transfer, a swap, a plain contract call — whether it granted a spending permission and whether that permission was unlimited, which contracts were involved, and whether it succeeded or reverted.
Why does it matter whether a transaction was an approval?: Because approvals persist. A transfer is a one-off event that is already finished. An approval is a permission that stays active until it is revoked, which is why it is the mechanism behind most drained-wallet incidents.
Why does it sometimes say the pattern was not recognised?: Some transactions call contracts whose behaviour cannot be inferred from the function selector and event logs alone. When that happens we say the pattern was not recognised instead of guessing an interpretation.
Which network was my transaction on?: A transaction hash only exists on the network it was submitted to. If the explainer says it was not found, select a different network and try again.

Important

Cyber Security Space provides automated security analysis based on available blockchain and threat intelligence data. Results may be incomplete or inaccurate and should not be treated as a guarantee of safety, financial advice, or investment advice. This score reflects the security signals currently detected. A low-risk score does not guarantee that a wallet or transaction is safe.

Nothing on this page is financial or investment advice.