# @rootedrescue

### <picture><source srcset="/files/yHQJGsnTKXGol7dGBFIz" media="(prefers-color-scheme: dark)"><img src="/files/iTZa4ulJWBKYtwk4Thdr" alt="" data-size="line"></picture> [@rootedrescue](https://x.com/rootedrescue)

<div align="left"><figure><img src="/files/4vLb0lTkEYfBV2yGJFmq" alt="" width="100"><figcaption></figcaption></figure></div>

## Words of Wisdom

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<table data-card-size="large" data-view="cards" data-full-width="false"><thead><tr><th align="center"></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td align="center"><h3>"Consider Sources and Sinks<strong>"</strong></h3></td><td><strong>Source</strong>: a point in code where an attacker supplied input enters the execution flow.<br><br><strong>Sink</strong>: a point in code where malicious state change can occur.<br><br>Map the program for all <strong>Sources</strong> and trace the execution flow to determine which of them provide a path where a <strong>Sink</strong> can be reached. What safeguards are present and what would be required to bypass them?<br><br>Respectively, map the program for all <strong>Sinks</strong> and retrace the steps required to reach them to identify relevant <strong>Sources</strong>. Is it possible to craft a valid transaction to reach the <strong>Sink</strong> from the <strong>Source</strong>?</td><td><a href="/files/gIxUcxUyUuUwzbJFmp9Z">/files/gIxUcxUyUuUwzbJFmp9Z</a></td><td></td></tr></tbody></table>


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