Skip to main content

Security report for olo.sk

ODVOZ A LIKVIDÁCIA ODPADU a.s. (OLO a.s.) · Energy · Slovakia

Medium risk. 7 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

63/100

Risk levelMedium

0–100, higher is better. How it is calculated

OLO a.s. is a well-established municipal waste management company based in Bratislava, Slovakia, founded in 2003. The company provides comprehensive waste collection, recycling, bio-waste processing, and energy recovery services, positioning itself as a key player in the local environmental and energy sectors. The website reflects a mature digital presence with modern technologies such as React and Next.js, hosted behind Cloudflare DNS, and incorporates privacy compliance mechanisms like Cookiebot. The site is professionally designed, mobile-optimized, and provides clear navigation and rich content relevant to residents and businesses. Security posture is strong with HTTPS, security headers, and no visible vulnerabilities, although there is room for improvement in publishing dedicated security policies and incident response contacts. Overall, the domain registration data aligns well with the business claims, supporting high legitimacy and trustworthiness.

Scanned

This is an earlier scan of olo.sk. View the latest report

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

7 findings rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  2. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

Need hands-on remediation? Email guard@offseq.com

Keep watching olo.sk

This scan found 24 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

Billed monthly to your card. Cancel anytime. See sample alerts.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
75
Security headers
25
Email security
80
DNS health
70
Network security
100
GDPR outside view
25
Average
63

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention olo.sk, from OffSeq Breach.

Total records
15
Employees
3
Customers
3
Third parties
9
Weak passwords
40%

Latest record dated 2025-07-31 · 2 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for olo.sk.

Select it in the checkout above.

Masked preview

  • –beta.olo.sk2025-07-31
  • –beta.olo.sk2025-04-14
  • –beta.olo.sk2025-04-14

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

OLO operates primarily in the energy and transportation sectors related to waste management. Its business model focuses on municipal services with a strong emphasis on sustainability, recycling, and community engagement through reuse centers (KOLO). The company targets both residents and commercial clients in Bratislava, offering tailored services such as special waste removal and container rentals. The website content and social media presence indicate active communication and transparency. The company benefits from a long domain history and clear registration data, which enhances its credibility. Partnerships with city innovation initiatives further strengthen its market position.

Security posture

The website demonstrates a solid security foundation with enforced HTTPS, modern security headers, and no exposed sensitive data. Use of Cookiebot indicates attention to privacy compliance. However, the absence of a public security policy, vulnerability disclosure program, or incident response contacts suggests areas for maturity improvement. No known vulnerabilities or suspicious scripts were detected. The security score is good but could be enhanced by formalizing security governance and transparency.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Implement a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  3. Provide clear incident response contact channels such as security@ or abuse@ email addresses.
  4. Regularly review and audit third-party scripts and dependencies for vulnerabilities.
  5. Enhance accessibility features to meet higher standards and improve user inclusivity.

Contact details published on the site

Addresses
Legal name
ODVOZ A LIKVIDÁCIA ODPADU a.s.
VAT number
SK2020318256
Registration number
00681300
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ODVOZ A LIKVIDÁCIA ODPADU a.s. (OLO a.s.)
Description
OLO a.s. is a waste collection and disposal company serving Bratislava, providing waste management, recycling, bio-waste processing, and energy recovery services.
Key services
Waste collection and disposal, Recycling and sorting, Bio-waste processing, Energy recovery (ZEVO), Reuse centers (KOLO), Customer support and special waste removal services
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Cloudflare DNS, Cookiebot
Frameworks
React, Next.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent implemented
  • No exposed sensitive data in HTML
  • Use of modern JavaScript frameworks

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Cookiebot
Marketing tools
Cookiebot
Transparency
basic

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is professionally designed and well maintained
  2. Clear focus on waste management and recycling services for Bratislava
  3. Comprehensive user information including schedules, news, and service details
  4. Strong presence of official company data and contact information
  5. Use of modern web technologies and compliance with privacy regulations
  6. No signs of malicious or suspicious activity
Technical notes

Notes

The website is built on a modern React and Next.js framework, ensuring fast performance and good SEO. Hosting appears to leverage Cloudflare DNS for reliability and security. The site is fully responsive and optimized for mobile devices. Cookiebot integration provides GDPR-compliant cookie consent management. The technical implementation is robust with no broken elements detected. Opportunities exist to further improve accessibility and to document security and privacy practices more explicitly. Overall, the technical infrastructure supports a professional and user-friendly digital experience.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 71/100Medium30 findingsView report
Reviews of this site

Share your experience with olo.sk. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review olo.sk.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.