--- title: "Jessica walt (@jessicawalt) | Hashnode" description: "Jessica walt (@jessicawalt) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@jessicawalt" --- @jessicawalt # Jessica walt @jessicawalt · New York City, USA · Joined March 2026 ### [What are common DNS failures, and how do I fix them](https://dnsscanner.hashnode.dev/what-are-common-dns-failures-and-how-do-i-fix-them?utm_source=hashnode&utm_medium=feed) What are common DNS failures, and how do I fix them in a perfect way. 4 min read · [dnsscanner.hashnode.dev](https://dnsscanner.hashnode.dev/what-are-common-dns-failures-and-how-do-i-fix-them?utm_source=hashnode&utm_medium=feed) [Apr 2](https://hashnode.com/posts/what-are-common-dns-failures-and-how-do-i-fix-them/69cec68b0ff860b6de42b1dc) ### [How to Protect Your Site from Nameserver Hijacking](https://dnsscanner.hashnode.dev/how-to-protect-your-site-from-nameserver-hijacking?utm_source=hashnode&utm_medium=feed) In the cybersecurity landscape of 2026, the battle for digital sovereignty is won or lost at the DNS layer. While many organizations invest heavily in endpoint protection and firewalls, a silent chang 3 min read · [dnsscanner.hashnode.dev](https://dnsscanner.hashnode.dev/how-to-protect-your-site-from-nameserver-hijacking?utm_source=hashnode&utm_medium=feed) [Mar 31](https://hashnode.com/posts/how-to-protect-your-site-from-nameserver-hijacking/69cb94744b49f4a8e9311f7f) ### [How Companies Use DNS Monitoring to Ensure Website Availability](https://dnsscanner.hashnode.dev/how-companies-use-dns-monitoring-to-ensure-website-availability?utm_source=hashnode&utm_medium=feed) To manage all of this effectively, companies rely on dependable monitoring solutions. Tools like DNS SPY help track DNS activity, detect issues. 3 min read · [dnsscanner.hashnode.dev](https://dnsscanner.hashnode.dev/how-companies-use-dns-monitoring-to-ensure-website-availability?utm_source=hashnode&utm_medium=feed) [Mar 31](https://hashnode.com/posts/how-companies-use-dns-monitoring-to-ensure-website-availability/69cb5957b59631ef53ef2ff6) ### [Top Tools to Check and Verify CAA Records Online](https://dnsscanner.hashnode.dev/top-tools-to-check-and-verify-caa-records-online?utm_source=hashnode&utm_medium=feed) Managing domain security is becoming more important as online threats continue to grow. 2 min read · [dnsscanner.hashnode.dev](https://dnsscanner.hashnode.dev/top-tools-to-check-and-verify-caa-records-online?utm_source=hashnode&utm_medium=feed) [Mar 17](https://hashnode.com/posts/top-tools-to-check-and-verify-caa-records-online/69b97f08c22d3eeb8ace638c) ### [Best DNS Lookup Tools for Developers and SEO Experts](https://dnsscanner.hashnode.dev/best-dns-lookup-tools-for-developers-and-seo-experts?utm_source=hashnode&utm_medium=feed) Many professionals rely on specialized DNS tools for developers to inspect DNS records, troubleshoot configuration issues, and verify domain se 4 min read · [dnsscanner.hashnode.dev](https://dnsscanner.hashnode.dev/best-dns-lookup-tools-for-developers-and-seo-experts?utm_source=hashnode&utm_medium=feed) [Mar 15](https://hashnode.com/posts/best-dns-lookup-tools-for-developers-and-seo-experts/69b6d6f4f4eb2f8b04a6ecda)