Submitted URL: http://msci.force.com/
Effective URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F
Submission: On July 26 via manual from US — Scanned from DE

Summary

This website contacted 3 IPs in 2 countries across 4 domains to perform 15 HTTP transactions. The main IP is 2a02:26f0:3500:18::1724:a299, located in Frankfurt am Main, Germany and belongs to AKAMAI-ASN1, NL. The main domain is msci.my.site.com.
TLS certificate: Issued by DigiCert Global G3 TLS ECC SHA384 202... on April 3rd 2023. Valid for: a year.
This is the only time msci.my.site.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 1 13.110.41.154 14340 (SALESFORCE)
3 5 2a02:26f0:350... 20940 (AKAMAI-ASN1)
1 54.152.17.248 14618 (AMAZON-AES)
15 3
Apex Domain
Subdomains
Transfer
5 site.com
msci.my.site.com
125 KB
1 lightningdesignsystem.com
www.lightningdesignsystem.com — Cisco Umbrella Rank: 147804
2 KB
1 force.com
msci.force.com
511 B
0 sfdcstatic.com Failed
c1.sfdcstatic.com Failed
15 4
Domain Requested by
5 msci.my.site.com 3 redirects msci.my.site.com
1 www.lightningdesignsystem.com msci.my.site.com
1 msci.force.com 1 redirects
0 c1.sfdcstatic.com Failed msci.my.site.com
15 4

This site contains links to these domains. Also see Links.

Domain
status.salesforce.com
Subject Issuer Validity Valid
prod.cdn.salesforce-experience.com
DigiCert Global G3 TLS ECC SHA384 2020 CA1
2023-04-03 -
2024-03-26
a year crt.sh
www.lightningdesignsystem.com
R3
2023-07-04 -
2023-10-02
3 months crt.sh

This page contains 1 frames:

Primary Page: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F
Frame ID: CF946371D655D846CB01891E89D5A4D7
Requests: 15 HTTP requests in this frame

Screenshot

Page Title

Service Not Available

Page URL History Show full URLs

  1. http://msci.force.com/ HTTP 307
    https://msci.force.com/ HTTP 301
    https://msci.my.site.com/ HTTP 301
    https://msci.my.site.com/SalesforceServiceandSupport/ HTTP 301
    https://msci.my.site.com/SalesforceServiceandSupport/s/ Page URL
  2. https://msci.my.site.com/SalesforceServiceandSupport/s/login?ec=302&startURL=%2FSalesforceServiceandS... HTTP 302
    https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceand... Page URL

Detected technologies

Overall confidence: 100%
Detected patterns

Page Statistics

15
Requests

20 %
HTTPS

33 %
IPv6

4
Domains

4
Subdomains

3
IPs

2
Countries

125 kB
Transfer

877 kB
Size

8
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. http://msci.force.com/ HTTP 307
    https://msci.force.com/ HTTP 301
    https://msci.my.site.com/ HTTP 301
    https://msci.my.site.com/SalesforceServiceandSupport/ HTTP 301
    https://msci.my.site.com/SalesforceServiceandSupport/s/ Page URL
  2. https://msci.my.site.com/SalesforceServiceandSupport/s/login?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F HTTP 302
    https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 0
  • http://msci.force.com/ HTTP 307
  • https://msci.force.com/ HTTP 301
  • https://msci.my.site.com/ HTTP 301
  • https://msci.my.site.com/SalesforceServiceandSupport/ HTTP 301
  • https://msci.my.site.com/SalesforceServiceandSupport/s/

15 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
/
msci.my.site.com/SalesforceServiceandSupport/s/
Redirect Chain
  • http://msci.force.com/
  • https://msci.force.com/
  • https://msci.my.site.com/
  • https://msci.my.site.com/SalesforceServiceandSupport/
  • https://msci.my.site.com/SalesforceServiceandSupport/s/
1 KB
1 KB
Document
General
Full URL
https://msci.my.site.com/SalesforceServiceandSupport/s/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
2a02:26f0:3500:18::1724:a299 Frankfurt am Main, Germany, ASN20940 (AKAMAI-ASN1, NL),
Reverse DNS
Software
/
Resource Hash
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests
Strict-Transport-Security max-age=63072000; includeSubDomains
X-Content-Type-Options nosniff
X-Xss-Protection 1; mode=block

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.5790.110 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

akamai-grn
0.99a02417.1690391872.93428cf5
cache-control
max-age=0, no-cache, no-store
content-encoding
gzip
content-length
521
content-security-policy
upgrade-insecure-requests
content-type
text/html; charset=UTF-8
date
Wed, 26 Jul 2023 17:17:52 GMT
expires
Wed, 26 Jul 2023 17:17:52 GMT
pragma
no-cache
referrer-policy
origin-when-cross-origin
strict-transport-security
max-age=63072000; includeSubDomains
vary
Accept-Encoding
x-content-type-options
nosniff
x-origin-cache-control
must-revalidate,no-cache,no-store
x-xss-protection
1; mode=block

Redirect headers

akamai-grn
0.99a02417.1690391872.9342868b
cache-control
no-cache,must-revalidate,max-age=0,no-store,private
content-length
0
content-security-policy
upgrade-insecure-requests
date
Wed, 26 Jul 2023 17:17:52 GMT
location
https://msci.my.site.com/SalesforceServiceandSupport/s/
referrer-policy
origin-when-cross-origin
strict-transport-security
max-age=63072000; includeSubDomains
x-content-type-options
nosniff
x-origin-cache-control
no-cache,must-revalidate,max-age=0,no-store,private
x-xss-protection
1; mode=block
Primary Request /
msci.my.site.com/SalesforceServiceandSupport/s/login/
Redirect Chain
  • https://msci.my.site.com/SalesforceServiceandSupport/s/login?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F
  • https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F
870 KB
122 KB
Document
General
Full URL
https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F
Requested by
Host: msci.my.site.com
URL: https://msci.my.site.com/SalesforceServiceandSupport/s/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
2a02:26f0:3500:18::1724:a299 Frankfurt am Main, Germany, ASN20940 (AKAMAI-ASN1, NL),
Reverse DNS
Software
AkamaiNetStorage /
Resource Hash
ae354f22f553d045313877878e54ac14984773985e4833b4d50f3464fb4b4b4e
Security Headers
Name Value
Content-Security-Policy default-src 'self'; media-src *; img-src *; script-src 'self' 'nonce-1064169034' 'unsafe-inline' ; style-src 'self' 'unsafe-inline' ; font-src 'self' data:; frame-src *;

Request headers

Referer
https://msci.my.site.com/SalesforceServiceandSupport/s/
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.5790.110 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

akamai-grn
0.99a02417.1690391873.9342a31e 0.99a02417.1690391873.93429c1c
cache-control
no-cache, no-store
content-encoding
gzip
content-security-policy
default-src 'self'; media-src *; img-src *; script-src 'self' 'nonce-1064169034' 'unsafe-inline' ; style-src 'self' 'unsafe-inline' ; font-src 'self' data:; frame-src *;
content-type
text/html
date
Wed, 26 Jul 2023 17:17:54 GMT
etag
"e286887ab5e8b6fe4eb83a8890378361:1681931284.14087"
expires
Wed, 26 Jul 2023 17:17:54 GMT
pragma
no-cache
server
AkamaiNetStorage
sna_page
/failover/sites/site_down/maintenance.html
vary
Accept-Encoding
x-origin-cache-control
max-age=0, no-cache, no-store

Redirect headers

akamai-grn
0.99a02417.1690391872.93429666
cache-control
no-cache,must-revalidate,max-age=0,no-store,private
content-length
0
content-security-policy
upgrade-insecure-requests
date
Wed, 26 Jul 2023 17:17:53 GMT
expires
Thu, 01 Jan 1970 00:00:00 GMT
location
https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F
referrer-policy
origin-when-cross-origin
strict-transport-security
max-age=63072000; includeSubDomains
x-content-type-options
nosniff
x-origin-cache-control
no-cache,must-revalidate,max-age=0,no-store,private
x-xss-protection
1; mode=block
SalesforceSans-Light.woff2
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-Light.woff
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-LightItalic.woff2
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-LightItalic.woff
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-Regular.woff2
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-Regular.woff
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-Italic.woff2
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-Italic.woff
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-Bold.woff2
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-Bold.woff
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-BoldItalic.woff2
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

SalesforceSans-BoldItalic.woff
c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/
0
0

logo.svg
www.lightningdesignsystem.com/assets/images/
5 KB
2 KB
Image
General
Full URL
https://www.lightningdesignsystem.com/assets/images/logo.svg
Requested by
Host: msci.my.site.com
URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
54.152.17.248 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS
ec2-54-152-17-248.compute-1.amazonaws.com
Software
nginx /
Resource Hash
9b924af0e8e1e341f703ecd6d3402671b3112b4c2ecba2c0d27ca2e3ad368dc7

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://msci.my.site.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.5790.110 Safari/537.36

Response headers

Date
Wed, 26 Jul 2023 17:17:55 GMT
Content-Encoding
gzip
Via
1.1 spaces-router (devel)
Last-Modified
Wed, 26 Jul 2023 02:56:38 GMT
Server
nginx
Etag
W/"64c08b66-1352"
Content-Type
image/svg+xml
Content-Length
1847

Failed requests

These URLs were requested, but there was no response received. You will also see them in the list above.

Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Light.woff2
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Light.woff
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-LightItalic.woff2
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-LightItalic.woff
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Regular.woff2
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Regular.woff
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Italic.woff2
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Italic.woff
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Bold.woff2
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Bold.woff
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-BoldItalic.woff2
Domain
c1.sfdcstatic.com
URL
https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-BoldItalic.woff

Verdicts & Comments Add Verdict or Comment

0 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

8 Cookies

Domain/Path Name / Value
msci.force.com/ Name: CookieConsentPolicy
Value: 0:1
msci.force.com/ Name: LSKey-c$CookieConsentPolicy
Value: 0:1
msci.my.site.com/ Name: CookieConsentPolicy
Value: 0:1
msci.my.site.com/ Name: LSKey-c$CookieConsentPolicy
Value: 0:1
msci.my.site.com/ Name: BrowserId
Value: WlBcCyvYEe68W6vuBkkkrw
msci.my.site.com/ Name: BrowserId_sec
Value: WlBcCyvYEe68W6vuBkkkrw
.my.site.com/ Name: ak_bmsc
Value: BEF85F4DCEC2A488637429EC11BECC7A~000000000000000000000000000000~YAAQmaAkF4WFHWyJAQAA3QQ1kxQYTy4NsfavX9A2k/AziYwvIJ653YUf+zeYcsZS3PUM1zBGL5Ld/E0hj+NfvLMvgMXcT1MvXzM23Qo8zpmtEOn+MRf83H4vM+tUB/eqAwFRzWvSDfmj/e7c0soxRQw39AN5xbqzwPb7DDh93XgaDmr0yR+NIDgdO5Ccqcpl6NMDauSfEPRzc0Eh2TcFo8rFKDWjsogHx+Nc4yip2Zm4/7bimxCkzkwHsO0rzpkq+w19KG7nD0BbeepXV4lCBbIShI1gG3JNwaylZBIWf+LxkRT5fHTGmbx1BjvyqhBH9rX24T/xTPO4Bs47AvSRhEIH0JaSC5LGzLyF159Cfie2tkhmzoPbHffZ8Xi3BUJcEwtpsL2EvO52dUYubToA2MXz
.my.site.com/ Name: bm_sv
Value: 03EF03B85FE3DF8B8ED46ACAE841816D~YAAQmaAkFyuHHWyJAQAAhQ01kxTGL/8x8weiJjHY+p+fW30TXj9xdL7dTM4Au/F9yc4NtfDcxfX7m31d8+HCjBLasJ+hUkMslJfxvbq1oCADInrV4g9+qn5DthQFCJDYXoaKLND3dWj13Zue9xnJ50bYFgrleDdlhM3eUbom3060mlDMpgzUQk9iy0Ig72+Vnqlynw0Dt4RAz3v6Kol8UZ/eDHf0rnc57EYEQqqsLPYDnmHaDrZ+aAVVBRLlvBrlCg==~1

13 Console Messages

Source Level URL
Text
network error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F
Message:
Failed to load resource: the server responded with a status of 503 ()
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Light.woff2' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Light.woff' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-LightItalic.woff2' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-LightItalic.woff' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Regular.woff2' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Regular.woff' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Italic.woff2' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Italic.woff' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Bold.woff2' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-Bold.woff' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-BoldItalic.woff2' because it violates the following Content Security Policy directive: "font-src 'self' data:".
security error URL: https://msci.my.site.com/SalesforceServiceandSupport/s/login/?ec=302&startURL=%2FSalesforceServiceandSupport%2Fs%2F(Line 31937)
Message:
Refused to load the font 'https://c1.sfdcstatic.com/etc/clientlibs/sfdc-aem-master/clientlibs_base/fonts/SalesforceSans-BoldItalic.woff' because it violates the following Content Security Policy directive: "font-src 'self' data:".

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header Value
Content-Security-Policy upgrade-insecure-requests
Strict-Transport-Security max-age=63072000; includeSubDomains
X-Content-Type-Options nosniff
X-Xss-Protection 1; mode=block

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

c1.sfdcstatic.com
msci.force.com
msci.my.site.com
www.lightningdesignsystem.com
c1.sfdcstatic.com
13.110.41.154
2a02:26f0:3500:18::1724:a299
54.152.17.248
9b924af0e8e1e341f703ecd6d3402671b3112b4c2ecba2c0d27ca2e3ad368dc7
ae354f22f553d045313877878e54ac14984773985e4833b4d50f3464fb4b4b4e