Best practices for license validation placement in Electron apps

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Developers building paid Electron apps are advised to place license validation logic in the main process rather than renderer code, which is more accessible to inspection and tampering. Keeping contextIsolation enabled and exposing only minimal license status through a narrow preload/IPC API are among the recommended security boundaries. A walkthrough using the PermitCore client library demonstrates how to validate a license key against a product ID at app startup, quitting the application if the license is invalid. The guide also covers offline grace periods, revoked-key testing, and the often-overlooked step of selling the application. PermitCore offers a built-in storefront integrated with Stripe that automatically generates and delivers license keys after payment, charging zero sales commission.

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Security Report Flags High Flash Loan Attack Risk on DeFi Protocol Portal

A DeFi security research team published an analysis on September 29, 2026, identifying six flash loan attack vectors targeting Portal, a cross-chain liquidity protocol with approximately $1.8 billion in total value locked across Ethereum L1 and L2. The report assigned Portal an aggregate risk score of 8 out of 10, placing it in the high-risk category. The most critical vulnerability involves oracle price manipulation, where an attacker could use a flash loan to distort Portal's time-weighted average price oracle and exploit mispriced collateral or liquidations, potentially draining up to 30 percent of TVL in a single transaction. Other significant risks include re-entrancy attacks through flash loan receiver callbacks and a 'liquidation sandwich' technique that could siphon collateral from borrowers. Researchers strongly recommended immediate remediation of oracle integrity safeguards and re-entrancy protections as priority measures.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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