Bellflower Unified School District logo

Bellflower Unified School District

busd.k12.ca.us

UpGuard Security Report
Date scanned:

Security rating · scale 0–950 · grades A–F

Bellflower Unified School District's UpGuard security rating is A (840 / 950), which is excellent. 8 of 62 external checks are currently failing, mostly in Network and DNS.

Strong

No failing checks in Data leakage, IP/Domain Reputation, and Vulnerability Management.

Open risk

Failing checks: CSP implemented unsafely; DMARC policy is p=quarantine; 'HTTP' port open; and 5 more.

Incidents

Most recent coverage: Bellflower Unified School District data breach: what happened and what's at risk, published June 17, 2026.

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See the 62 checks behind this score

busd.k12.ca.us

Security overview

UpGuard continuously monitors Bellflower Unified School District's externally observable security posture across Website Security, Email, Network, DNS, Encryption, Data leakage, IP/Domain Reputation, and Vulnerability Management. The rating reflects only what can be verified from outside the organization. It is not an audit of internal controls.

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Get alerted when Bellflower Unified School District's risk changes

UpGuard scans Bellflower Unified School District daily across 62 external risk signals. Get notified the moment something changes: a new vulnerability, a breach, or a posture shift.

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busd.k12.ca.us security rating

Bellflower Unified School District data breaches, leaks & security incidents

Confirmed breaches, data leaks, cyber attacks, and hacking incidents involving Bellflower Unified School District, with sources and dates.
Module last updated November 8, 2026.

Detailed external checks

The evidence behind the rating. 62 checks across 8 categories, 8 currently failing. Failed checks are listed first.

Website Security

  • CSP implemented unsafely

    The Content Security Policy may not restrict sources appropriately, or may contain 'unsafe-inline' without the use of a nonce or hash. This increases the risk of XSS attacks.

  • Secure cookies used

    Using secure cookies reduces the risk of third parties intercepting information contained in these cookies.

  • Server information header not exposed

    Ensuring the server information header is not exposed reduces the ability of attackers to exploit certain vulnerabilities.

  • X-Powered-By header not exposed

    Information about specific technology used on the server is obscured.

  • CSP implemented without insecure active sources

    The Content Security Policy does not allow any insecure active sources.

  • HttpOnly cookies used

    Using HttpOnly cookies reduces the risk of client side script attacks, by preventing cookies being read on the client.

  • Referrer policy is not unsafe-url

    The website's Referrer Policy is not configured to allow unsafe information to be sent in the referrer header.

  • ASP.NET version header not exposing specific ASP.net version

    Ensuring the ASP.NET version header is not exposing a specific version makes it harder for attackers to exploit certain vulnerabilities.

  • ASP.NET version header not exposed

    Ensuring the ASP.NET version header is not exposed makes it harder for attackers to exploit certain vulnerabilities.

  • CSP implemented without insecure passive sources

    The Content Security Policy does not allow any insecure passive (img/media) sources.

  • CSP implemented without unsafe-eval

    A Content Security Policy is implemented to help protect against XSS and clickjacking attacks.

  • X-Content-Type-Options is not nosniff

    Browsers are prevented from interpreting files as a different MIME type to what is specified in the Content-Type HTTP header. This helps mitigate MIME confusion attacks.

  • No unmaintained page detected

    The page appears to be maintained.

Email

  • DMARC policy is p=quarantine

    The DMARC policy should be set to p=reject for maximum protection.

  • DMARC policy exists

    DMARC protects against fraudulent emails being sent from a domain.

  • Strict SPF filtering - not using +all

    Sender Policy Framework (SPF) record strictly enforces specific domains allowed to send email on its behalf.

  • SPF syntax correct

    Sender Policy Framework (SPF) record passes basic syntax checks.

  • DMARC policy percentage is default

    DMARC policy percentage is set to default 100%, ensuring all mail is covered by the policy.

  • SPF ptr mechanism not used

    Sender Policy Framework (SPF) record does not include the ptr mechanism.

Network

  • 'HTTP' port open

    The 'HTTP' service is running and exposed to the internet. The configuration of the server should be reviewed and unnecessary ports closed.

  • 'HTTPS' port open

    The 'HTTPS' service is running and exposed to the internet. The configuration of the server should be reviewed and unnecessary ports closed.

DNS

  • DNSSEC not enabled

    DNSSEC records prevent third parties from forging the records that guarantee a domain's identity. DNSSEC should be configured for this domain.

  • CAA not enabled

    The domain does not contain a valid Certification Authority Authorization (CAA) record. A CAA record indicates which Certificate Authorities (CAs) are authorized to issue certificates for a domain.

  • No unregistered MX records detected

    No unregistered MX records that could lead to receiving mail on behalf of the target organization were detected.

  • No subdomain takeover vulnerability detected

    No dangling DNS records that could lead to subdomain takeover were detected.

Encryption

  • Domain was not found on the HSTS preload list

    The domain was not found on the HSTS preload list. Users who visit the website for the first time will be vulnerable to MITM attacks. The requirements for inclusion on the preload list are specified by hstspreload.org.

  • HSTS header does not contain includeSubDomains

    The HTTP Strict Transport Security (HSTS) header does not contain the includeSubDomains directive. This directive instructs the browser to also enforce the HSTS policy over subdomains of this domain.

  • Certificate not found on our revoked certificate list

    The site's certificate chain was checked against our list of revoked certificates.

  • SSL available

    SSL is supported for this site.

  • HTTP requests are redirected to HTTPS

    All HTTP requests are redirected to HTTPS.

  • Hostname matches SSL certificate

    The site's hostname matches the SSL certificate.

  • SSL has not expired

    SSL certificate has not expired.

  • Trusted SSL certificate

    The certificate presented by this domain was issued by a trusted certificate authority.

  • HTTP Strict Transport Security (HSTS) enforced

    With HSTS enforced, people browsing this site are less susceptible to man-in-the-middle attacks.

  • No insecure SSL/TLS versions available

    No insecure SSL/TLS versions are available for this site.

  • SSL certificate chain present in server response

    A complete SSL certificate chain was presented by the server for this domain.

  • SSL chain certificates do not expire within 20 days

    SSL intermediate and root certificates do not expire within 20 days.

  • SSL expiration period shorter than 398 days

    The SSL certificate presented by the server has an expiration period shorter than 398 days.

  • SSL has more than 20% of its valid period remaining

    SSL certificate does not expire in less than 20% of its total valid period.

  • Strong SSL algorithm

    Industry standard SHA-256 encryption in use.

  • Strong public certificate key length

    The site's public certificate provides at least 112 bits of security strength.

  • No weak cipher suites supported in TLS 1.2

    TLS connections to the site do not support any weak cipher suites.

Data leakage

  • No infostealer malware detected

    Our scans have not found any evidence of infostealer malware infections associated with this organisation's domain.

  • No open cloud storage service detected

    No cloud storage service configured to allow anonymous file listing was detected.

  • Domain index is not a listable directory

    The domain index is not a listable directory.

IP/Domain Reputation

  • Not a suspected malware provider

    This website does not appear to contain malicious code.

  • No reports of botnet activity in the last 30 days

    This IP/domain has not been reported as a source of botnet activity in the last 30 days.

  • No reports of brute force login attempts in the last 30 days

    This IP/domain did not appear on any list of IPs and domains known to perform brute force login attempts in the last 30 days.

  • No reports of malware distribution in the last 30 days

    This IP/domain has been reported for distributing malware in the last 30 days.

  • No reports of unsolicited scanning in the last 30 days

    This IP/domain has not been reported for performing unsolicited scanning in the last 30 days.

  • Not suspected of unwanted software

    This website does not appear to be attempting to install unwanted software.

  • Not a suspected phishing page

    This site does not appear to be a forgery or imitation of another website.

  • No reports of phishing activity in the last 30 days

    This IP/domain has not been reported as a phishing site in the last 30 days.

  • No reports of botnet activity in the last 90 days

    This IP/domain has not been reported as a source of botnet activity in the last 90 days.

  • No reports of brute force login attempts in the last 90 days

    This IP/domain did not appear on any list of IPs and domains known to perform brute force login attempts in the last 90 days.

  • No reports of malware distribution in the last 90 days

    This IP/domain has been reported for distributing malware in the last 90 days.

  • No reports of unsolicited scanning in the last 90 days

    This IP/domain has not been reported for performing unsolicited scanning in the last 90 days.

  • No reports of phishing activity in the last 90 days

    This IP/domain has not been reported as a phishing site in the last 90 days.

Vulnerability Management

  • Not vulnerable to CVE-2014-0160 (Heartbleed)

    A bug in OpenSSL's implementation of the TLS heartbeat extension allows access to portions of memory on the targeted host e.g. cryptographic keys and passwords.

  • Not vulnerable to CVE-2014-3566 (POODLE)

    The server does not support SSLv3, and is not vulnerable to the POODLE attack.

  • Not vulnerable to CVE-2015-0204 (FREAK)

    The server does not offer RSA_EXPORT cipher suites, so clients are not vulnerable to the FREAK attack.

  • Not vulnerable to CVE-2015-4000 (Logjam)

    The server is using strong Diffie-Hellman parameters and is not vulnerable to the Logjam attack.

Company info

Company
Bellflower Unified School District
Domain
busd.k12.ca.us
Employees
3
Location
Bellflower, CA, United States
Industry
Education
Last updated
November 8, 2026

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UpGuard scans Bellflower Unified School District daily across 62 external risk signals. Get notified the moment something changes: a new vulnerability, a breach, or a posture shift.

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busd.k12.ca.us security rating
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