88/100 SECURITY SCORE

Certificate Information

Subject
CN=aart.georgetown.edu
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 10, 2025
Valid Until
March 10, 2026 68 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
B7:07:24:F2:38:36:BD:8F:24:48:4D:8D:0B:EA:BD:0E:B0:4B:71:DB:3B:C9:C1:45:BE:F3:E3:B5:03:0D:B4:49
Alternative Names

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=63072000; includeSubdomains; preload
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Present
geolocation=(self), microphone=(), camera=()
Recommendations
  • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • Add Content-Security-Policy header to prevent XSS attacks

CAA Records (Certificate Authority Authorization)

CAA Records
Not Configured (Any CA can issue certificates)
CAA Issues
  • No CAA records configured - any CA can issue certificates
Recommendations
  • Implement CAA records to restrict which CAs can issue certificates for your domain
  • This adds an extra layer of security against unauthorized certificate issuance
  • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
  • Consider adding 'iodef' record to receive security incident reports

Subject Alternative Names

100 domains
aart.georgetown.edu academicsupport.georgetown.edu accessibility.georgetown.edu activeshooter.georgetown.edu addictionpolicy.georgetown.edu adifferentdialogue.georgetown.edu aelrc.georgetown.edu africachinainitiative.georgetown.edu africanstudies.georgetown.edu aging.georgetown.edu aicolab.georgetown.edu aidc.georgetown.edu aiguidelines.georgetown.edu americanstudies.georgetown.edu americasforum.georgetown.edu analytics.georgetown.edu anesthesiology.georgetown.edu anthropology.georgetown.edu anxietyresearch.georgetown.edu arabic.georgetown.edu art.georgetown.edu assessment.georgetown.edu auxiliary.georgetown.edu avesterra.georgetown.edu bakerscholars.georgetown.edu bdog.georgetown.edu benefits.georgetown.edu bga.georgetown.edu biasreporting.georgetown.edu biohaz.georgetown.edu bioinformatics.georgetown.edu biology.georgetown.edu biomedicalresearch.georgetown.edu biostatistics.georgetown.edu biotechnology.georgetown.edu blackstudies.georgetown.edu bmcb.georgetown.edu box.georgetown.edu bses.georgetown.edu bsi.georgetown.edu bulletin.georgetown.edu business.georgetown.edu businessforimpact.georgetown.edu businessofretail.georgetown.edu businessofsustainability.georgetown.edu campusministry.georgetown.edu cancerandaging.georgetown.edu canzps.georgetown.edu careers.georgetown.edu catholicstudies.georgetown.edu cbpp.georgetown.edu cbpr.georgetown.edu cct.georgetown.edu ceh.georgetown.edu cellmedicine.georgetown.edu centerforhealthequity.georgetown.edu centile.georgetown.edu cerl.georgetown.edu cets.georgetown.edu cfmi.georgetown.edu cghpi.georgetown.edu chemistry.georgetown.edu cied.georgetown.edu cigh.georgetown.edu cjc.georgetown.edu classics.georgetown.edu clinicalbioethics.georgetown.edu clinicaltrials.georgetown.edu cmea.georgetown.edu cmhe.georgetown.edu cnir.georgetown.edu cognitivescience.georgetown.edu cogsci.georgetown.edu commencement.georgetown.edu commencement2020.georgetown.edu commonhome.georgetown.edu commonsense.georgetown.edu communityengagement.georgetown.edu compass.georgetown.edu compliance.georgetown.edu complit.georgetown.edu coo.georgetown.edu counsel.georgetown.edu cph.georgetown.edu cpnl.georgetown.edu crf.georgetown.edu cs.georgetown.edu csd.georgetown.edu csj.georgetown.edu ctht.georgetown.edu cti.georgetown.edu ctl.georgetown.edu ctsa.georgetown.edu curaterra.georgetown.edu cyberfellows.georgetown.edu cyj.georgetown.edu dcm.georgetown.edu debate.georgetown.edu digitalethics.georgetown.edu cru.gumc.georgetown.edu