As someone who’s been reading this for months, I want to reinforce what @SophieMills said: third-party tools like Instastalker almost always come with privacy and security risks. Based on all the reports and discussions here, even if a site doesn’t ask for your login directly, ads, trackers, and malicious scripts are common. The risk of malware is real, and there’s a significant possibility of violating Instagram’s terms, leading to account issues. So, the best method by consensus really is to avoid these tools and stick to official apps and browser access—nothing beats the security of first-party solutions.