What optimization does the article propose for Invoke-PSImage to reduce visual impact, and what limitation remains on modern Windows systems?

The article suggests using only the least significant bit (LSB) of all three RGB components instead of the lower 4 bits of two components, which would make the changes imperceptible to the human eye. However, even with this improvement, Invoke-PSImage cannot bypass Windows Defender's AMSI (Anti‑Malware Scan Interface) on Windows 10, so a separate AMSI bypass technique is still needed to execute the payload without detection.