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  • Authors
  • Ahona Rudra
  • About
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Ahona Rudra
Domain & Email Security Expert at PowerDMARC
Ahona is the Marketing Manager at PowerDMARC, with 5+ years of experience in writing about cybersecurity topics, specializing in domain and email security. Ahona holds a post-graduation degree in Journalism and Communications, solidifying her career in the security sector since 2019.
Latest posts by Ahona Rudra (see all)
  • PowerDMARC vs VerifyDMARC: Which DMARC Tool Gives You More? - October 13, 2026
  • What Is a DNS Sinkhole and How Does It Work? - October 13, 2026
  • What Is DNS Tunneling? Attacks, Detection, and Prevention - October 12, 2026
SPF Policy for Email Senders

SPF Policy for Email Senders

Blog
An SPF policy is a list of mail servers authorized to send messages on behalf of your domain. When someone tries to send you an email, their server checks the SPF policy for your domain to determine if it should accept the message or not.
May 17, 2022
What is BlackCat Ransomware

What is BlackCat Ransomware?

Blog
The FBI has recently issued a warning about a new strain of ransomware known as the BlackCat Ransomware (Noberus and AlphaV). Free BlackCat ransomware prevention guide with DMARC.
May 9, 2022
Cyber Resilience and DMARC

Cyber Resilience and DMARC

Blog
Cyber resilience builds on the baseline of good cyber security practices by addressing businesses' ability to withstand, recover and counter cyber threats. Make DMARC a part of your company’s cyber resilience framework.
April 7, 2022
Can I configure DMARC without SPF

Can I configure DMARC without SPF?

Blog
Yes, you can set up DMARC without SPF. It is a possibility that you can explore, that a lot of vendors and domain owners do exercise in real-time.
January 31, 2022
Beware of Omicron variant email phishing scams

Beware of Omicron-variant email phishing scams in 2025!

Blog
Beware of fake Omicron-variant PCR test kits in this new 2022 email phishing attack! Public-health service sectors warn civilians of this alarming new phishing lure.
January 20, 2022
phishing and spoofing

How to improve your defenses against phishing and spoofing?

Blog
DMARC, SPF and DKIM can help you defend your domain against phishing and spoofing attacks, and other forms of online threats. We help you onboard the protocols with ease to bypass these attacks without compromising on deliverability.
December 24, 2021
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Latest Blogs

  • PowerDMARC-vs.-VerifyDMARC
    PowerDMARC vs VerifyDMARC: Which DMARC Tool Gives You More?October 13, 2026 - 8:44 am
  • dns sinkhole
    What Is a DNS Sinkhole and How Does It Work?October 13, 2026 - 8:05 am
  • dns sinkhole
    What Is DNS Tunneling? Attacks, Detection, and PreventionOctober 12, 2026 - 8:54 am
  • dns sinkhole
    DoH vs DoT: What is the Difference Between DNS over HTTPS and DNS over TLS?October 12, 2026 - 7:16 am

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