According to Richard Teng, crypto traders should be alert to three major security red flags: pressure to act immediately, promises of guaranteed returns, and any requests for private keys or seed phrases (Source: Richard Teng, Twitter, June 18, 2025). These warning signs are frequently linked to scams targeting digital assets like BTC and ETH. Maintaining control of your private keys is essential for safeguarding your portfolio. Traders are urged to independently verify all opportunities and never share sensitive information, as security lapses can directly lead to asset loss and significant trading setbacks.