Healthcare represents an exceptionally fragile sector within the Spanish digital ecosystem. Only a very small percentage of healthcare domains enforce strict policies, while a massive portion lacks any DMARC architecture whatsoever. Compounded by a near-total absence of MTA-STS, patient medical files and internal clinical communication channels remain deeply vulnerable to malicious interception and domain spoofing.
Spanish banking and financial institutions lead the country in policy maturity, driven heavily by direct European regulations like DORA. However, this defense-in-depth is significantly undermined by a widespread missing rate for MTA-STS. This means that while incoming spoofing is heavily restricted, outbound transactional traffic, internal messaging logs, and wire instructions often move without forced transit-layer encryption.
Spanish public administration domains showcase an excellent baseline compliance level due to mandatory alignment with the ENS. However, only a minimal fraction executes a protective rejection policy. Crucially, multiple municipal and regional public sectors completely lack DMARC defense entirely. Paired with low adoption rates for MTA-STS and DNSSEC, citizen-facing communication lines remain highly spoofable.
Academic and research networks present vast, distributed attack surfaces. While maintaining a reasonable correct SPF configuration score, only a small minority of educational institutions have reached strict enforcement. Furthermore, many have skipped DMARC implementation altogether and lack MTA-STS, exposing university research intellectual property and student records to systematic exfiltration.
As primary gatekeepers of public discourse, Spanish media networks face a profound credibility threat. Currently, just a fraction of sector domains operate at protective enforcement, and many lack any DMARC framework entirely. When paired with a major deficit in MTA-STS deployment, bad actors can easily spoof prominent news sources to mount coordinated disinformation or phishing campaigns.
Telecom operators manage sprawling customer billing infrastructures. While some have advanced to an enforcement stance, a large percentage do not possess a DMARC entry in their DNS records. Coupled with a severe MTA-STS gap, subscriber validation alerts, billing notices, and administrative accounts remain highly vulnerable to manipulation.
Logistics networks serve as the backbone of local commerce, yet they exhibit Spain's lowest defensive scores. An alarmingly low number of domains utilize a functional protective configuration, while a significant portion completely lacks DMARC parameters. Operating alongside a major deficiency in MTA-STS, supply-chain billing operations remain critically exposed to invoice interception schemes.
Energy sectors provide vital national services but show significant policy gaps under NIS2 scrutiny. While a high percentage have deployed basic SPF, only a small portion actively enforce rejection policies, and many maintain no DMARC architecture at all. Additionally, most lack MTA-STS encryption, creating entry vectors for malicious engineering notices targeting edge assets.
